Dahlia - decoration of my garden. I grow this flower separately from others. I want to say that it does not make high demands on the composition of the soil. Dahlia flower, also known as dahlia, is represented in a wide variety of shades.
I prefer to combine red varieties with yellow ones, but white, pink, and bicolor are also popular. In this article, I share my experience in growing dahlia. You will learn how to properly use the tubers for reproduction. Dahlia flower photos:
To get gorgeous flowers, you need to choose the right place for planting. If the soil in the area is poor, depleted, be sure to fertilize it. For long flowering dahlias should be fed perennial. Loosen the ground near the landing, thanks to this, you will improve the permeability of the soil.
In the spring I advise you to buy healthy, healthy tubers. If the planting material is soft, choose a different one. Dry tuber is also unsuitable for cultivation. Experienced gardeners propagate dahlia tubers. Generative reproduction is practiced by breeders, it helps to bring out new, unique varieties.
Site selection, seed preparation
We proceed directly to the landing. Tubers are placed in the ground on the 15th of May. If you use seeds, the plant will bloom in August. To dahlia in the open ground bloomed earlier, it is necessary to germinate seeds. In April, they are sown in plastic cups filled with clean wet sand.
I advise you to close the seeds 1 cm, after which - cover the cups with polyethylene. Planting material in this form is kept for 10 days. It germinates well at a temperature of + 26 degrees. After that, the sprouts dive (transplanted into separate cups).
Germinated seeds take root in moist, loose soil. To prepare the substrate, you need to take one part of peat and sand, 2 parts of leafy ground. Before transplanting seedlings, the soil should be treated with potassium permanganate, then water the seedlings.
I advise you to plant germinated seeds at the end of May. Place the seedlings in a spacious, draft-free area. Dahlia prefers fertile drained soil. It can grow in soil with high and low acidity, but neutral is recommended.
- If the PH reaches 5, slaked lime should be added.
- If the PH level is 8.5, it is necessary to dilute the soil with peat.
The prepared site is dug up, humus is introduced at the rate of 4 kg per 1 cubic meter. After planting seedlings need to make compost with a small amount of wood ash.
It is important to ensure the prevention of pests. To rest the soil, I recommend to replant the dahlia every year. Decorative culture feels bad if asters grew up on the plot before it.
Planting material is prepared in April. If there are dry or damaged roots on it, it is necessary to remove them, cut them with green paint. Tubers are planted in containers filled with nutrient mixture. The root neck should be located 3 cm above the ground.
Planting material develops favorably at a temperature of + 18 degrees. You can put it under an artificial light source. A few days after transplantation, the tubers form buds, at which time they should be cut into pieces.
I advise you to remove ten centimeter shoots. At the final stage is landing in the ground. The flower can also be grown from cuttings (shoots), planting is carried out on the same principle.
Landing in the garden
Dahlia is a hardy plant, it takes root even in cold climates, for example, in the Urals. After planting seeds, cuttings or tubers, be sure to make water. Before planting planting material, you should make sure that the earth is warmed up. I advise you to plant tubers in early June.
It is necessary to dig a trench of size 40 x 40, lay manure or compost on the bottom, sprinkle with earth. Some gardeners prefer tall varieties, in this case it is necessary to install drainage, it will provide air access and will not allow the plant to fall.
After planting, add water at room temperature. Use wood ash mixed with peat as mulch.
How to care for a flower
For full growth of dahlia it is necessary to mulch the area with peat and timely dig up the land. It is important to save the plant from slugs. I advise you to make water 1 time in 7 days. If the weather is rainy, you should limit watering.
Waterlogging is detrimental, the dahlia's roots begin to rot. Remember that stagnant water can lead to the death of a flower. Hilling in hot weather.
Feed the flowers in a timely manner: alternate organic matter with mineral compounds. At the end of spring, add 15 g of saltpeter per 1 cubic meter. Useful ten percent solution of mullein and a twenty percent infusion of litter. When the first kidneys appear, superphosphate and potassium compounds are applied, a solution is applied: 30 g of the preparation per 10 liters of water.
For dahlia to grow well in the garden, it is necessary to remove the buds that have bloomed. On one peduncle should remain 2 pcs. If there are many buds, the growth of ornamental culture is disturbed.
In a tall variety, lower side branches should be removed. If the flower is short, it is necessary to leave the shoots. Improper care and non-compliance with crop rotation are dangerous for the plant, it can be attacked:
To combat slugs and earwigs, use the infusion of celandine. Dahlia strikes aphid. To destroy this pest, it is necessary to apply a soap solution.
I recommend digging them in the fall when cold weather comes. Pre-remove the leaves. Dig up planting material in the morning in dry weather. It is worth noting that the tubers are fragile, careless movement can damage them.
After digging, shorten long roots, clean from the ground, dry and wash. It is important to remove the dahlia tubers in a timely manner, otherwise the buds inside will germinate.
Planting and care is easy, even for a novice gardener! But you should follow certain rules. It is important to moderately make water, periodically fertilize the flower. Cultivation also involves pest control. Use insecticides if necessary.
Description and characteristics of dahlias
Dahlias can be attributed to the tuberous cultures of the Astrov family, the place of origin of this culture is Mexico. The ancient Aztecs used the root system of this plant for food. The plant was brought to Europe at the end of the 18th century, where an amazing and unusual flower was appreciated for its dignity.
Now you can count more than fifteen thousand varieties of this flower. They can be dwarf type, not to exceed 30 centimeters in height. Other species can grow above 120 centimeters in height. You can distinguish dahlias and the size of the inflorescences. Miniature flowers have buds in diameter less than 10 centimeters. Small, medium and large buds reach a length of 10 to 25 centimeters, and giants exceed the parameter 25 centimeters.
All dahlias in their bud form can be divided into the following varieties:
- Simple varieties able to grow up to 45-60 centimeters in height, and their small petals form a tubular form in the center and one row of marginal petals. The diameter of such a bud will be equal to 10 centimeters.
- Nymphaea Terry Dahlias can easily reach a height of up to 70-130 centimeters and differ with other soy flowers in an unusual and regular shape with a diameter of 7–20 centimeters. They are very similar to water lilies.
- Semi-kaktos speciesreaching a height of about 90-150 centimeters. Their terry flowers include pointed, folded marginal petals and can reach 8–25 centimeters in diameter.
- Cactus species of terry inflorescences distinguished by their narrow and upward-pointing marginal flowers. The diameter of the inflorescence of the plant reaches 8-25 centimeters. The height of the plant is 90-150 centimeters.
- Pompon dahlia types in height equal to 90-120 centimeters. Their terry flowers have the shape of a ball, as well as a diameter of at least five centimeters. Rolled petals on the edges are either loaded or with a blunt end.
- Spherical flowers They look like bushes with a height of 90 to 120 centimeters, on the shoots of which flattened terry inflorescences are formed with a total size of 8-15 centimeters. Their folded edges may have either a blunt or rounded end.
- Decorative Dahlia reach a height of 90-150 centimeters. Terry flowers of yellow, pink, orange, red and purple with a total diameter of 8-25 centimeters differ from other plants with wide petals along the edges and a blunt end.
- Peony flowers possess a tubular form of petals. The height of the bush varies from 75 to 120 centimeters. The total diameter of the multicolored inflorescences of crimson, purple and red hues reaches 12-15 centimeters.
- Collar variety presented in the form of a bush with a height of 75-120 centimeters. Their inflorescences differ in their rather unusual color. They can be presented in red, yellow, scarlet color of the outer petals, with cream or gold twisted types inside.
- Anemid Dahlias. This is a culture with red, yellow, purple, bronze flowers with a diameter of up to 10 centimeters. Their inflorescences include large tubular petals with several marginal leaves. The height of the shrub can freely reach 60–90 centimeters.
Features of growth and development of dahlias in the open field
At the end of May or with the arrival of June, when the ground can warm up well, dahlias can be planted in open ground. To the place for growing plants are not particularly whimsical. They can grow freely even in full shade, but with all this, the overall color and size of the inflorescences can worsen their performance. To get interesting and unusual flowers, it is necessary to plant a plant on a plot with light penumbra, where they can bloom for a long time.
When choosing an area for planting, it is worth considering the overall level of soil moisture, as the plant tubers may start to rot. The soil mixture for the plant must be well drained. Culture should not be planted on the territory of the lowlands.
Dahlias planting and care in the open field
Culture can grow quickly in black soil conditions, on sandy soils and on loams. Tubers before planting should be well prepared in April:
- Dry root is first cleaned.
- Are removed and processed by the green of the place of damage.
- The plant should be planted in a box or in another dish, which will be a mixture of peat and nutritious land in equal proportions. After that, the tubers should be stored in a box for two weeks at a total temperature of + 18 degrees Celsius. Planting should be done so that the tubers above the ground surface protrude a few centimeters.
- After the development of the kidney, each tuber should be divided with a knife into several parts at once. Each such delenka should have a kidney with a root neck.
Delenki need for some time to continue to germinate in special boxes. Before planting the plant in open ground, it is necessary to eliminate all side shoots with a height of 10 centimeters.
Caring for dahlias, growing
Ground mix for planting dahlias should be prepared even in the fall. Plot need to dig and add to the soil fertilizer compost or humus. Before the process of planting in springtime, it is necessary to sprinkle a little wood ash, as well as mature (but not deciduous) compost on top of the soil. All this is worth stir using a rake.
The size of the pits should be chosen so that the rhizomes could fully immerse in them, and there is also free space left to feed. At the bottom of each hole is to pour a little manure or rotted type of humus, which should be sprinkled with soil. In this case, the rhizomes just do not earn a burn. Bury a sprouted tuber stands so that several centimeters of shoots remain above the ground surface. Saplings should be watered regularly and abundantly, and the soil around them should be covered with mulch on top. As a good fertilizer for the plant, you can use mixed compost or peat, sawdust and wood bark.
Near tall varieties of dahlias should immediately place an additional support for growth. It is not worth planting dahlias every year on the same area of growth. So, they will begin to quickly become infected with parasites and diseases, and can also quickly die. The earth should rest from the plants for three years.
The process of caring for dahlias
Throughout the year, if there is no raining process, the plant should be watered once or twice a week. After the watering process, especially when it’s too dry outside, shrubs should be spud. This will help them retain moisture in the ground. In the next watering the soil from the stems of the crop should be otgresti, water, and the plant once again to pile up. It will help for a long time not to dry the soil and carrying out mulching. In addition to all this, mulch will be able to qualitatively protect the soil from slugs and facilitate the work when weeding and loosening the plot.
What to feed the plant?
In the process of growing and active growth of dahlias could get a long and beautiful flowering buds, they need to be fed every two weeks. When feeding a plant, it is worth alternating complex mineral fertilizers, as well as organic ones. As soon as the first buds develop on the plant, it is worthwhile to add potash supplements or superphosphate for each shrub.
Dahlia pruning process
- Throughout the summer period, it is worth eliminating all ottsvetyshie inflorescences so as not to delay the development of new ones. In dahlias with a high height, the lower side shoots should be eliminated all the time. In solitary, as well as in stunted shrubs this can not be done.
- To increase the number of buds on a plant, it is worth keeping no more than three inflorescences on one shrub. If there are too many inflorescences, the size of the flowers themselves will be crushed and will lose all their decorative effect.
- Hollow stems from dahlias can quickly break under the influence of the wind. It is for this reason that tall dahlia shrubs should necessarily be tied to an additional support. If you make a careful care of the flower, you can manage to save the just-deformed stem. To do this, it is necessary to tie up a stick or a strong branch.
Dahlia tuber storage in winter time
In late September - early October, after removing the unwanted stems from the crop with the onset of lower temperatures, the dahlia tubers should be dug. A few days from the shrub is to eliminate all the stems that are covered with aluminum foil. Excess water can easily fall into the bare stems of a plant, and for this reason they can start to rot.
Tubers should be dug at a distance of 30 centimeters from all sides. Forks should be pushed under the long rhizomes of the flower and try to push them out. Tubers and the root system of the plant should be properly shake off excess soil, rinse them with a hose and lay out on the air for further drying.
The main importance in the development of culture is the creation of proper storage and care of dahlia tubers in winter. Poorly dried tubers can quickly rot, and very dried ones give too weak and weak sprouts in springtime. Planting material should be stored in a well-ventilated place at a relative humidity of 60% and at a total temperature of 3-5 degrees Celsius.
Before placing the tubers for further storage, remove all mechanical damage from them and sprinkle such areas with crushed activated charcoal or charcoal. Laying the material for further planting is in pots with dry sand, pine sawdust, and peat. If the tubers begin to actively dry and wither, then the peat should be moistened a little. In a room where natural ventilation is not used, a fan should be left to work three times a week for half an hour.
Place for growing dahlia
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Culture does not require much attention. Flowers can comfortably grow in shady places. However, their location may affect the size of the buds. In order for dahlia buds to be beautiful and large, you need to choose half-shaded places. This will prolong the flowering period without compromising the beauty of the plants.
A moderate level of humidity is the only condition that must be observed when growing dahlias. Since the tubers of the plant are prone to decay. That is why it is necessary to abandon the planting of plants in the lowlands. Experienced gardeners are advised to make a layer of expanded clay or broken bricks on a bed before planting.
As for the soil, you can not worry because of its structure. Shrubs feel good on sandy, loamy soils, as well as black soil.
When to plant culture? Клубни растений высаживать нужно после зимы весной или ранним летом, после того, как пройдут все заморозки и почва прогреется. Если высадка георгин происходит весной, то необходимо укрывать саженцы от заморозков.Low temperatures are dangerous for plant tubers.
Watch the video! Preparation of dahlia tubers for planting
For planting need to dig holes, given the size of the root system. It should be borne in mind that in the hole should also be a place for compost or manure. Therefore, the size of the hole must be appropriate. The tuber should be located in such a way that the root neck rises a few centimeters above the ground.
The root neck is the area that is located above the rhizome. Here are the growth buds, from which grow new shoots. If you sprinkle this area with earth, it can lead to decay. That is why it is important to comply with this condition.
In order for flowering plants to start earlier, dahlia seedlings need to germinate. Tubers should be placed in a layer of soil or sawdust and covered with polyethylene. It is necessary to leave a small hole in order to create air circulation. Tubers should be constantly irrigated using an atomizer. Under the conditions of such a mini-greenhouse, kidneys will become active much earlier.
Stalks of plants must be tied up, as they can easily break from strong winds. That is why before landing you need to make a special backup. For this you need to insert a peg into the hole and bury with tubers. This should be done at the time of planting, since after several months it will be difficult to do it carefully without damaging the roots.
For undersized bushes, pegs of about 30 cm are suitable. And for high varieties, pegs of 50 cm are required. It is recommended to drive in several props for comfortable growth of plants. With their help, you can firmly fix the shrubs.
Tip! Dahlia tubers can die in severe frosts. That is why in the regions of central Russia is recommended to dig up the tubers in the fall.
Sowing directly into the ground
Considering that these plants are very thermophilic and do not tolerate even short-term light frosts, they can be sown in the ground only after the 20th of May in order to be sure that the night frost will not destroy the shoots.
However, there is a significant drawback: flowering in this case can be seen no earlier than August.
Therefore, many gardeners still arrange a mini-greenhouse or greenhouse for these flowers and sow in the twentieth of March. You can use old window frames or stretch the film on the arc.
- The prepared bed should stand a couple of days after digging for the land to settle.
- Furrows stuffed shallow, distance 60 cm.
- In a row, we sow less often, plants need space, thick shoots after they pierce or transplant, leaving a distance of at least 60 cm between the bushes.
- After sowing, the ground is leveled with a rake, falling asleep furrows.
- Well watered, you can a thin layer sprinkle the bed with rotted humus to prevent the formation of earthy crust.
Watering is often not necessary, the natural moisture should be enough for a few days. But if the weather is hot, make sure that the earth does not dry out.
Growing dahlias for seedlings at home
Dahlia from seeds How to plant dahlias on seedlings photo
When planting dahlia seeds directly on the flower bed, it will come no earlier than mid-August. When planting seeds at home for seedlings achieve an early start of flowering. Growing in this way usually does not cause any trouble for growers. The only point that should be taken into account is that dahlia seedlings do not tolerate even weak frosts.
Seeds convenient to grow undersized dahlias for decoration borders, rabatok. Plants grown from seeds form a small tuber by autumn. Therefore, you can save your favorite copy and disembark the next season to admire it next summer. Dahlia seeds ripen well - they can be harvested, saving for planting next year.
Annual dahlias sow for seedlings in April, but if you want to get a perennial variety of many years, you need to sow in early March.
- Prepare containers in which drainage is provided. If you use food packaging, be sure to make holes in the bottom.
- Fill containers with nutritious, loose soil rich in organic matter. Remember, a simple garden soil will have a bad effect on the health of seedlings: during the time of care, it tends to thicken. Therefore, it is better to buy a special blend for flowers. Well, or not to be lazy, adding to the garden soil rotten organic matter, peat and sand in equal shares.
- Sowing is done shallow, 1-1.5 cm. It is desirable to sow less often, leaving a distance of 2-3 cm between the seeds.
- When little dahlias release 2-3 true leaves, they gently swoop down into separate cups. You can use a fork, a teaspoon or any other convenient tool for you. The main thing is not to damage the delicate roots and move them with a clod of earth.
- Next, just pour and provide sufficient lighting.
- With the onset of warm weather, seedlings arrange a walk outside: we teach to the wind and the sun. Gradually we increase the time and by the end of the second week of hardening, our seedlings should stay on the street for a full day. Such hardened seedlings will not hurt after disembarkation and will quickly start.
Planting seedlings of dahlias in the spring in the ground
Planting seedlings of dahlias in the ground - joyful stage for the gardener. Finally, the flowers will go to the flower bed. Here I want to give some tips:
- Try to avoid strict rows, landing will look unnatural, too prim. It is better to combine dahlias with garden balsamine, rudbeckia bushes, buzulnik or asteriscus, imitating natural chaos.
- Give more space for each bush, the distance to other plants is at least 60 cm.
- The wells are prepared in advance, make them wider and deeper into cups, it is desirable to pour a little bit of humus on the bottom.
- Planted seedlings, carefully removing a clod of earth so that the earth does not crumble from the roots.
- Positioned vertically in the hole, trying to maintain the existing level of the root collar.
- Sprinkled with earth, moisturize abundantly.
- It is advisable to mix the basal space with any available material: fresh grass, sawdust, pine needles.
How to divide the tubers before planting, look at the video:
Once the tubers are ready for planting, we begin the process itself. Prepare deep holes, about 30 cm deep and 40 cm in diameter. They pour humus on the bottom, mix it with garden soil. Spread one delenka of tubers in each well, covered with earth, the distance from the tuber to the surface of the earth is about 5-8 cm.
Dahlia reproduction by dividing tubers
- Tubers for planting prepared in advance. First they are placed in wet sawdust or peat.
- After the sprouts appear, they are neatly divided into several parts with a sharp knife, so that each one has sprouts.
- Sections are dried and sprinkled with ashes or activated carbon. After that, again placed in sawdust for rooting.
- As soon as the warm weather without frosts, they are planted in pre-prepared holes.
- In each well contribute 1/3 of a bucket of humus or compost.
- Delenka placed in the hole so that the shoots were at the surface of the soil.
- Well shed and filled with compost.
- The root neck should be at ground level.
Dahlia reproduction cuttings
Breeding dahlia cuttings photo how to plant
- At the end of February, dahlia roots are treated with a weak solution of potassium permanganate and placed in boxes, filled with half a light nutrient substrate, and watered moderately.
- Cuttings take 3-4 weeks.
- Root is processed and planted in individual cups.
- To accelerate rooting can cover planting polyethylene.
- Rooting occurs within two weeks.
- In early June, they are planted in groups or in rows at a distance of 60 cm.
How to plant dahlias tubers Dahlia planting in the spring How to plant dahlias photos and video
- Dahlias prefer sunny patches. In the penumbra they grow excellently, but there are significantly higher plants planted in the sun.
- Deep shadow has a negative effect on the development and flowering.
- They love quite wet soil - for this, the land under plantings should be mulched with semi-sawdust or mowed grass. This will prevent moisture evaporation and eliminate weeding.
- Top dressing is carried out in those cases, when organic components were not introduced into the soil during planting.
- Use liquid complex fertilizer every two weeks.
- Under tall varieties be sure to put support - it will protect against breakage of the stem during bad weather and strong wind.
On each bush should be left no more than 3 shoots.. To get larger flowers on the central peduncles, you should cut off all lateral shoots. Be sure to remove faded buds, to give young people the opportunity to grow. The smaller the buds, the larger the flowers.
After the first frost has damaged the bushes, they should be excavated.. Cut the stem at a height of 15-20 cm from the ground and carefully dig up the root, trying not to damage it at the same time. Very often, a liquid accumulates inside the hollow stem, and this causes the plant to rot during storage. Therefore, the tuber is turned down the stem, allowing the fluid to flow out. After that, you can dry the tubers in the open air during the day, if the weather permits. Then they are transferred to storage in a dry basement.
Diseases and pests
Dahlias are quite stable, but it should be avoided that the soil is wetted, which contributes to the development of diseases and the attack of slugs. Against aphids and mites, periodically irrigate your plants with tar water. When viral mosaic is damaged, light spots appear on the leaf plates, yellowing along the veins. Such plants should be discarded. If uncharacteristic growths are found on tubers, which indicates bacterial cancer, infected tubers are destroyed.
Types of dahlias with photos and descriptions
How to plant dahlias in spring Dahlia tree Dahlia arborea photo
Dahlia arborea tree dahlia - a view with a powerful woody stalk reaching a height of 2 m. It has simple lilac baskets.
Dahlia perennial planting and care Dahlia coccinea Dahlia photo
Dahlia coccinea - The leaves of this species are pinnate with pointed lobes. Baskets are simple and small.
In the species Dahlia juarezii, a stalk about 1 m high with deeply cut dark malachite leaves and colorful inflorescences. Cactus-shaped dahlias originated from it.
Dahlias annual planting and care Dahlia Dahlia variabilis photo Dahlia variabilis
Dahlia Dahlia variabilis dahlia - has simple baskets with red reed and yellow tubular flowers.
All these species come from Mexico and laid the foundation for various varieties, so beloved by our gardeners. They do not tolerate even the easiest frost and are grown in our strip as annuals. But dahlia tubers are great at wintering in dry, cool rooms like potato tubers. To do this, they dig and re-planted in the spring.
There is a division of dahlia in the form of inflorescence
Anemone like. Srednerosly group with semi-double blossoms resembling anemones.
Collar. The tubular petals of this plant are shorter than other species. The middle of the inflorescence consists of small tubular petals with a collar from one row of large flat petals of contrasting colors.
Peony. Externally similar to peonies. The most extensive and colorful look.
Lotus or nymph. All varieties of this species belong to the terry and the largest.
Decorative. The most common variety, which includes the greatest number of varieties.
Spherical and pomponovidnye. Similar to each other and differ in the size of the inflorescence. Both have double flowers, resembling a ball consisting of many petals. Pomponovidnye diameter does not exceed 5 cm. Spherical - 8-15 cm. Both species are tall.
Cactus. The most original variety, their inflorescences consist of long narrow, folded petals, sometimes dissected at the ends.
Planting dahlias with tubers When planting dahlias Dahlias after winter photos and video
Medicinal properties of dahlias can be attributed to medicinal plants. Broths of these colors normalize metabolic processes, useful for the cardiovascular system. Tincture of rhizomes is used as a prophylactic against diabetes. Fresh leaves are applied to the skin to treat acne. Rhizomes are used in a crushed form as a mask for aging facial skin. Powder of tubers rubbed into the base of the hair follicles to strengthen the hair.
When planting dahlias in the ground in spring Dahlia flowers photo in the garden
Low-growing varieties are used for borders, flowerpots, balcony boxes. Most varieties are used in free formulations or group plantings. And especially spectacular, floriferous - in single plantings. Varieties with long, sturdy flower stalks are used for cutting, stand well in the water for more than a week.
Growing dahlia planting and care in the open field Photos in the garden
Dahlias have always been loved by our gardeners. Some of them collect entire collections - their flower gardens attract attention with an abundance of flowering dahlias. The abundance of planting material on the shelves of stores, a sufficiently unpretentious, lush bloom put the dahlia among the most sought-after plants on our plots.
Dahlias tubers in spring When planting dahlias Planting and care of photo and video
General description, varieties and photos of dahlias
Dahlias belong to the tuberous plants of the Astrov family, whose homeland is Mexico. The ancient Aztec flower roots were eaten. Dahlias were introduced to Europe at the end of the 18th century, where the grace and amazing beauty of the flower were appreciated.
Currently counted over fifteen thousand varieties of this amazing plant. Some may be dwarf and reach a height of only 30 cm. Others grow more than 120 cm in height. Dahlias differ in flower sizes. Miniature buds have a diameter of less than 10 cm. Small, medium and large flowers reach from 10 to 25 cm in diameter, and giants - more than 25 cm.
All dahlia flower shape classified into the following types:
- Simple varieties grow to 45-60 cm in height and have small tubular petals in the center and one row of marginal petals. The diameter of their flower is about 10 cm.
- Nymphaee terry dahlias grow to a height of 70-130 cm and are distinguished by flowers of beautiful, regular shape with a diameter of 7-20 cm. They are very similar to water lilies.
- Semicactus varieties are plants with a height of 90-150 cm. Their terry inflorescences consist of pointed, rolled edge petals and reach a diameter of 8-25 cm.
- Cactus terry flowers are characterized by narrow, pointed, folded marginal flowers and inflorescences in diameter of 8-25 cm. The height of the bush is 90-150 cm.
- Pompon dahlias reach a height of 90-120 cm. Their terry inflorescences are ball-shaped with a diameter of less than 5 cm. The folded edge petals have a rounded or blunt end.
- Spherical varieties are bushes with a height from 90 to 120 cm, on the shoots of which flattened terry inflorescences are formed with dimensions of 8-15 cm. Their folded marginal flowers have a rounded or blunt end.
- Decorative dahlias grow to 90-150 cm in height. Terry inflorescences of orange, yellow, pink, red, purple with a diameter of 8-25 cm are distinguished by wide marginal petals with a blunt end.
- Peony-like species have tubular petals in the center and several rows of flat marginal petals. The height of the bush is from 75 to 120 cm. The diameter of purple, red, red inflorescences is 12-15 cm.
- Bornell varieties are a bush with a height of 75-120 cm. Their inflorescences have an interesting color. They may have red, yellow or scarlet outer flat petals and cream or gold slightly twisted inside.
- Anemic dahlias are plants with red, purple-yellow, bronze flowers with a diameter of up to 10 cm. Their inflorescences consist of an elongated large tubular middle and several marginal petals. The height of the bush reaches 60-90 cm.
Features of growing dahlias in the open ground
In late May or early JuneWhen the soil warms up, dahlias can be planted in open ground. To place the plants are not very demanding. They will grow even in the shade, but the color and size of the inflorescences may suffer. To get beautiful buds, it is recommended to plant dahlias in light partial shade, where they will bloom for a long time.
When choosing a site, it is necessary to take into account the level of soil moisture, since the tubers of the plant are prone to decay. The soil for dahlias should be well drained. It is not recommended to plant them in the lowlands.
The soil for planting dahlias is prepared in autumn. The plot is dug up and fertilized with compost and humus. Before planting in the spring, a little wood ash and mature (not hardwood) compost crumble over the ground. Everything is stirred with a rake.
The size of the pits should be such that the roots are fully submerged in them, and there is still room for fertilizer. At the bottom of each hole is poured a little manure or rotted humus, which is covered with earth. In this case, the roots will not get burned. A sprouted tuber is buried so that several centimeters of shoot remain above the ground surface. Saplings are plentifully watered, and the soil around them is covered with mulch. В качестве мульчи используются перемешанные с компостом или торфом опилки или древесная кора.
Рядом с высокорослыми георгинами необходимо сразу установить опору. Не рекомендуется высаживать георгины каждый год на одно и то же место. They will hurt and may degenerate. The soil should rest from them for about three years.
Pruning and dahlia support
Throughout the season, it is necessary to remove faded buds so as not to delay the appearance of new ones. In dahlias of high varieties, lower side shoots are recommended to be removed. In solitary and undersized bushes this can not be done.
To get large buds on one bush leave no more than three buds. With a large number of inflorescences flower sizes will be smaller and not so decorative.
Hollow dahlia stalks break easily in gusts of wind. Therefore, tall plants are tied to a support. With careful care of the dahlia bushes, you can manage to save just broken stem. For this, a stick or a strong branch is attached to it.
Storing tubers in winter
At the end of September - the beginning of October, after the stems are taken away and strong frosts occur, the dahlia tubers must be excavated. It is recommended to do this in dry weather in order to dry them in air. In a few days, the stems that are covered with aluminum foil are cut from the bush. In the naked stems can get wetand they will start to rot.
Tubers are dug in at a distance of 30 cm on four sides. Forks slip under the long roots and push them out. Tubers and roots are shaken off the ground, washed with their hose and laid out to dry.
When growing dahlias, proper storage and maintenance of tubers in winter is of great importance. Poorly dried tubers can rot, and too dried ones give weak sprouts in the spring. It is recommended to store planting material dahlia in a well-ventilated area at a humidity of 60% and at a temperature of 3-5 ° C.
Before putting the tubers into storage, mechanical damage from them must be cut off and sprinkle with pounded charcoal. Planting material is placed in containers with dry sand, peat or coniferous sawdust. If the tubers begin to wither or dry, the peat is slightly moistened. In a room where there is no natural ventilation, it is necessary to turn on the fan three times a week for thirty minutes.
Pests and diseases of dahlias
Earwigs, caterpillars, spider mites, horsefly bugs and aphids are the most dangerous pests of plants. When they first appear, the bushes are recommended to be treated with broth of celandine or wormwood every seven days in the evenings. From aphids you can apply a soap solution. If there are many pests, then insecticidal treatment is necessary.
Young shoots attract slugs, which usually appear in the rainy season. To prevent the soil around the plants sprinkled with a special remedy for slugs. If there is a lot of wireworm in the ground, then chlorophos is embedded in it with the help of a rake.
Caused by viruses stained and mosaic wilting treatment can not be. In order not to infect other plants, the diseased shrub is dug and burned along with the tubers.
In mid-March, healthy tubers are selected that need to be germinated. They are pre-cleaned from damaged parts and soaked for 15 minutes in a solution of potassium permanganate. Planting material is planted in containers with wet ground. At the same time, the root neck should remain open. After the eyes reach a size of 1.5 cm, the tubers are pulled out of the ground and cut into several pieces. Each part with one peephole and root neck is planted in a separate pot. The incision site of the root collar is not deepened.
Eavesdropping is the easiest and most effective way to grow and grow dahlias. It is held in late March - early April. Tubers for grafting are prepared in the same way as for reproduction by division. Care of them consists in timely watering of the soil. As soon as the cuttings grow by 5-10 cm, they will need to be cut off under the bottom sheet, and put for rooting into water or a mixture of peat and sand.
In the open ground cuttings land in late May - early June. The holes for them should be slightly larger than a clod of earth in a pot. Before planting the plants are well spilled. Cuttings are placed in the landing hole. The space between the lump and the walls of the hole evenly filled with soil. Watering the cuttings after planting is recommended after a couple of days.
Seed multiply annual dwarf varieties of dahlias and plants for decoration rabatok and borders. Planted in May, dahlia seeds will bloom only in early August. To get a flowering plant in mid-summer, the seeds in April are sown in a greenhouse. Sand is used as a soil for sowing seeds.
Seeds are sown, moistened and covered with foil. They are germinated at an air temperature of 25 ° C. When real leaves appear, sprouts are spiked in separate containers with loose soil. In open ground, young plants are planted in mid-May.
Cultivation of dahlias in the open field is not such a difficult task. With proper planting and compliance with all simple recommendations for care, from mid-summer to the very frost in the garden will be decorated with gorgeous inflorescences framed by emerald green.
Major diseases and parasites common in dahlias
Earwigs, spider mites, caterpillars, blind bugs, as well as aphids are considered the most formidable pests for culture. At their first development, the shrub stands once a week according to the recommendations of specialists in the evenings to process with the help of decoction of wormwood, as well as celandine. You can get rid of aphids if you start using a soap solution. If there are too many parasites, then it is worth making the treatment of the plant with insecticidal agents.
Young shoots may attract different slugswhich most often attack the plant in the rainy season. To prevent the soil around the plant, you need to sprinkle a specialized slug preparation. If there is a large amount of wireworm in the soil, then it is worth adding chlorophos to it with a rake.
Caused by viral infections spotty as well as planting wilting absolutely no cure. To avoid infection of other crops in the garden, the diseased shrub should be excavated, and then burned together with the deformed tubers.
This plant can be propagated in three ways at once.: by dividing the tuber by cutting, and also by seed. Each method includes its own advantages and disadvantages, which should be considered before dahlia breeding.
Annual and perennial dahlia
The technology of planting and care of various types of dahlias has significant differences, with which flower growers should be familiar with before deciding on planting a particular variety.
Table. Dahlia species
Below we give a detailed universal instruction planting dahlias tubers, such flowers are most often found in gardeners. But before that it is necessary to become familiar with the principles of dahlia cultivation agrotechnology.
General advice on planting and care
It is recommended to start direct work only after careful analysis of the site features. What to pay attention to?
To dahlia bloom profusely, you need to study the agrotechnology of their cultivation.
When solving this task, one should remember about the biological features of plants, take into account climatic conditions and make corrections on the terms of planting, harvesting, and adapt the agrotechnology for these conditions. Plants have a very short growing season, like a large amount of water and have relatively weak stems. What conditions should meet the place under the flowers?
- Flowerbed should be as long as possible illuminated by direct sunlight. In such conditions, the growing season accelerates, the flowers manage to survive all stages and bloom.
For normal growing season dahlias need a lot of sun.
To protect against the cold north winds, flowers are best planted on the south side of the house.
The soil under the dahlias should be moderately nutritious and loose, so that the water easily penetrates to the deepest roots.
Particular difficulties appear with amateur gardeners, who are starting to develop new areas on meadow, field, or overmoistened lands. It is necessary to tune in to many years of work, because such soils have an extremely low percentage of humus, high acidity parameters, and a heavy structure. These factors inhibit the growth of dahlias, require careful and professional soil preparation.
The better prepared the soil, the lush flowering dahlia
It is not necessary to immediately pour various mineral fertilizers into the ground, the optimal doses of the nutrients introduced depend on several factors.
- The residual amount of nutrients and the percentage of humus. For information, contact specialized laboratories for assistance. Their representatives will travel to the site for sampling the land and in a few days will give out detailed results. Taking into account the state of the land and the requirements of plants for the full growing season, agronomists calculate the missing amount of mineral substances. It is quite difficult, but agronomists strongly recommend sticking to this rule. The fact is that dahlias equally negatively react both to the lack of fertilizers and to their surplus. Analyzes should be done every three years.
Agrochemical soil analysis will help to correctly determine the need of plants for fertilizers.
Depending on the type of soil, plants may lack different elements.
Top dressing is done when preparing the land for spring work, when planting flowers in the hole or with periodic root feeding during the growing season.
This factor is individual in nature and depends largely on climatic conditions. At present, it is very difficult to make an exact schedule of planting flowers, the climate is changing rapidly and presents unexpected surprises. But for the middle band it is recommended to land in open ground in the first decade of June, and the tubers should have clearly visible sprouts. If unsprouted tubers are planted, then the work can be started from May 15, and the tubers themselves should already have clearly defined eyes. Before planting, it is necessary to measure the temperature of the soil, at a depth of 10 cm it should be within + 8 ° С.
Germinated tubers need to be planted later when the danger of frost has passed
Features of the placement of holes
At each hole should insert pegs for garter stalks of flowers. Without such an event, they will inevitably break down, flowering will stop and will not recover. The distance between plants depends on the variety, universal advice - it should be equal to half the height of the stem. The row spacing is about 100 cm, the supports should be about 120 cm high and have sufficient strength to resist considerable physical effort. It is better to use metal stops from round steel or construction fittings. These devices can be used for many years - the problem with the annual search for wooden sticks is solved.
Medium and tall dahlias necessarily require a garter
The tuber neck must be deepened into the ground by 4–5 cm; for cuttings of plants and hybrid seedlings, this parameter increases to 8–10 cm.
The tuber neck should be 4-5 cm deep.
Practical advice. Due to the low survival rate, it is recommended to plant the cuttings of two plants in each well.
If dahlias are planted in parallel rows, then you need to take into account the height of the plants: the lowest in the first row, and the highest in the last. It is necessary to work in the evening or in the morning, water the wells abundantly, repeat the same operation after planting. Depending on the height of the plant, the garter is made in at least 2-3 places; as the dahlia grows, the stalk garter continues.
The first garter is performed before the formation of buds
Planting in open ground
You can plant your own planting material or buy new varieties of dahlias in nurseries. Consider the second option, it is somewhat more complicated. The landing should be started only after the earth has warmed enough. It is desirable that at a depth of 10 cm the temperature was within + 8 ° C. To measure it today is simple, use a thermometer for baking.
First you need to make sure that the earth is well warmed up.
Step 1. Inspect the condition of the tubers, the damaged areas should be removed and treated with antiseptics. There are currently a lot of them, use any.
Enumerated tubers soaked in a solution of potassium permanganate
Step 2. Dig holes 20–25 cm deep, if you have organic fertilizers, you can put a little of them on the bottom. If not - nothing terrible, dahlias are undemanding to the ground and grow well on poor soils.
Prepare planting holes for flowers
Step 3. Remove the flower from the box.
The plant is carefully removed from the box, so as not to damage the roots.
Practical advice. There are situations when due to adverse weather conditions, landing in the open ground is delayed. In such cases, you need to properly arrange the plants in boxes and sprinkle with substrate or sawdust, put the container into the greenhouse or house, put it in a bright place. The roots will be planted with leaves and stalks, a thin root system will appear.
Step 4. Place the tuber in the hole, adjust the height of its position so that the root collar is covered with a layer of earth 3-5 cm high. To adjust the height, pour or remove the ground from the holes. In the first days after planting, it is not recommended to water dahlias, pour only a little water into the hole, this is enough for normal growth of the root system.
The tubers are lowered into the hole and leveled
Step 5. Carefully cover the tuber with soil and tamp it down a little. Stick a metal twig next to support the plant, do not damage its roots.
Insert flower support
Important. Depending on the height of the stems, choose the distance between the bushes: for undersized, 30–40 cm is enough; for tall ones, this value should be increased to one meter.
Step 6. Pour mulch around the bush - it reduces the evaporation of moisture and inhibits the growth of weeds.
Mulch is poured around the plant.
As the height of the stems increases, tie them to the supports, the intensity of the growing season depends on the climatic conditions. Do not forget to properly form a shrub, the duration of flowering depends on this. Trimming should be done only with clean tools, dahlias become infected very quickly. Leave no more than five stems, stepchildren also need to pinch.
Tuber harvesting technology
It is recommended to dig up the tubers after the first autumn frosts, when the leaves turn black, the dahlia flowers will bend down. It is not recommended to postpone digging, frost can increase and damage the roots of the plant.
Step 1. Garden shears cut off the entire above-ground part, leave the stumps up to 10 cm high.
Cut off the aerial part of the bush
Step 2. Very carefully shovel the tuber along the perimeter of the dahlia at a distance of about 20–25 cm from the stem. Do not rush, do not dig immediately to great depths. Tubers are quite solid, experienced gardeners feel an increase in load, if a shovel rests on them.
Carefully dig in the roots
Step 3. After the entire perimeter of the plant is released from the ground, pull it on the stumps. Several times tilt in different directions, this technique tuber is released from the small roots, holding it in the ground.
Take out the tubers from the ground
Step 4. Clean the roots of the hands of the remnants of the earth. Place the excavated rhizomes in a dark place.
Purified tubers are stored in a dark, dry place.
After 3-4 days carefully inspect the tuber, once again clean it from the ground. If damaged roots are found, they must be removed, and the cut sections must be treated with any antiseptic. After that, you can put the plants for long-term storage in a dark cool place.
Important. Do not wrap the roots in any way with a film or other moisture-proof material. Tubers must breathe and be able to evaporate excess moisture. Otherwise, until spring, they will rot and lose germination.
Video - Dahlias. Planting and maintenance in the open field
Dahlias are able to decorate any flower bed as a separate, as well as the whole ensemble. You already know the intricacies of planting and breeding this rather capricious flower. Often dahlias coexist with no less beautiful gatsanii. And what are the features of this flower, what is the difference in agricultural technology? All this and not only can be read on the pages of our site.
Choosing the right place
Choosing a place where dahlias will later settle, you need to consider the purpose of their cultivation - decorative or reproduction for sale. If the plans include the implementation of dahlia tubers, then the planting pattern will differ from that when growing these flowers to decorate the site.
The following recommendations for planting dahlias and caring for them in the open ground are relevant for central Russia and the CIS countries (Primorsky, Altai Krai, the southern part of the Khabarovsk Krai and Western Siberia, the South and Middle Urals, the Baltic States, Belarus, north-western Ukraine) . When grown in more southerly regions and countries, it will be necessary to make adjustments for climate features, shifting the time of planting and harvesting, as well as changing agricultural practices.
Выбирая место для выращивания георгинов, нужно учитывать их особенности, среди которых:
- высокая потребность в воде (чем выше температура воздуха, тем больше нужно воды),
- короткий вегетационный период,
- необходимость опоры и подвязки из-за хрупкости стеблей.
It is important to create an optimal microclimate that will allow you to get the maximum decoration of dahlias in a relatively short period. The landing site must be protected from cold northerly, northeastern and northwesterly winds and drafts and must be well warmed. In combination with low air temperature (from +1 to -4 degrees), strong winds can cause dahlias to freeze, especially if they were recently planted out of greenhouses or greenhouses and did not have time to get the necessary quenching.
In the southern regions, danger is the danger of dry winds — northeastern, eastern, and southeastern winds that carry heated, dry air. They dry up the soil and the aerial parts of the dahlia, causing the young foliage and the top of the plant to burn.
To protect the beds with dahlias from the winds, they enclose the area with trees, ordinary or fruit trees, use fences or protective stripes. Often the site is given a bias - southern or south-east for the middle belt and north or north-west for the southern regions.
Important! Lowlands, basins, valley areas where cold air usually accumulates and late spring frosts often occur should be avoided.
In the shade of trees or fences, dahlias grow beautifully and retain a high decorative effect if the sun illuminates them at least half a day. At the same time, planting of these flowers in the zone of the root system of large tall trees should be avoided, since they will not be able to bloom normally and form viable roots.
When choosing a site for planting dahlias, great attention should be paid to the issue of groundwater occurrence. They should not rise above the mark of 60-70 cm from the ground surface. If the water rises above the site, you should artificially raise a flower bed with dahlias to protect their root system from rotting.
In the hot southern regions, on the contrary, often arrange flowerbeds with dahlias in the recess, surrounded by the ramparts of the earth. At night, this recess is filled with water to ensure sufficient moisture to the roots.
Watering, loosening, soil mulching
After the seedlings have mastered the new place, watering is reduced, but at the same time the soil under the dahlias should always remain wet. With a lack of water, the stems quickly turn wood, slows growth and worsens flowering. It is rather difficult to restore the decorativeness of dahlias after this - it returns slowly after the onset of cool rainy weather.
In order to provide the dahlias with optimum air humidity, they carry out moisturizing irrigation using sprinklers (with small holes). 10-15 minutes of such irrigation allow for some time to increase the humidity in hot weather.
It is very important to maintain the soil under the dahlias in a loosened state and regularly clean weeds. Loosen it, as a rule, after each watering or fertilization. After the dahlias appear buds, and the green mass of plants closes, loosening stops, and the soil is mulched with peat or humus. This is done in order to slow the growth of weeds, prevent the formation of a crust on the soil and reduce the amount of watering, as the mulch allows the soil to stay moist longer.
Recommendation: if the vegetative mass is excessively developed, the lower leaves of the bushes are cut to a height of 30-40 cm in order to improve the ventilation of the air. This avoids the formation of a thick stalk at the root of the neck, which impairs the safety of tubers.
After the onset of sustained cold weather, dahlias spud. This will protect the roots from the first frost, and the height of the hilling should be 15-20 cm. If the plants are planted deeply, hilling can be avoided.
The need to add mineral or organic fertilizers for dahlias depends on the type of soil in which they are planted. Fertile soils that are regularly fertilized with organic matter, with humus, need less of it. Determine exactly what fertilizers need dahlias on a specific soil, you can pass the samples to the agro laboratory for chemical analysis. It allows you to plan fertilizer for the next 2-3 years.
Fertilization occurs in three ways:
- when tilling the soil before planting,
- when landing in each well,
- foliar or root dressings.
With the wrong selection of fertilizers, they can be ineffective or even harmful to plants. That is why it is recommended to regularly, once every 2-3 years, carry out chemical analysis of the soil.
In the autumn, organic fertilizers are usually added under maneuver - manure, composts, especially if they did not have enough time to decompose. In the spring, wood ash, superphosphate and aged peat are plowed into the ground.
It is not recommended to introduce easily soluble chemicals into the soil, as they are easily washed out of the soil and are not used by dahlias for their intended purpose. Among such substances:
- ammonium and other nitrates,
- potassium salt,
- urea (synthetic urea),
- potassium chloride.
The latter is advised to be applied to heavy clay soils. Fertile lands before planting dahlias do not additionally fertilize, but feed only in planting pits. For this purpose, humus (leaf or dung) mixed with wood ash or furnace soot is used. 3-4 tablespoons of ash are added to the compost bucket, a quarter of the mixture bucket is added to each well.
During the period of growth and flowering, dahlias regularly feed on organo-mineral fertilizers - every 12-14 days. To do this, use diluted cow dung or chicken manure (10 liters of water 1 liter of manure solution or 0.5 liter of manure solution) with the addition of potash (15 g) or ammonium (10 g) saltpeter, superphosphate (15-20 g) and potassium sulfate (10-15 g). A mixture feed bucket (10 l) is divided between 4-5 plants.
Such dressings continue until mid-July, then phosphate-potassium fertilizers replace them. And after the second half of August, preference is given to phosphate dressing. After each application of fertilizer bushes must be watered from the sprinkler.
Important! Lack of water, phosphorus and potassium can slow down the transfer of nutrients from the stem and leaves to the roots in the autumn.
Preparing for the winter
Dahlias do not overwinter in open ground. In the autumn, after the ground part dies off (as a rule, after the first frosts), root crops are dug out and placed in storage.
You need to dig up the tubers on the first day with a positive air temperature, because if you delay the kidneys can wake up and cause the tuber to rot. Before digging, the stems are cut with a garden shears at a distance of 3-4 cm from the root collar, and then with a fork or a spade they remove nests from the soil. Tubers are laid out in boxes and placed for several weeks in a cool, damp room (+8 degrees at a humidity of 80%).
After 2-3 weeks, the nests are cleaned of small roots and old tubers, processed into sections, and placed in storage in boxes. The bottom of the boxes are covered with 3 cm of earth, then the tubers are laid out and covered with earth. Store boxes at a temperature of 1-7 degrees of heat and high humidity (80-100%).
There are several ways to winter storage of tubers. Each gardener chooses the most convenient for themselves. The main thing - to ensure the safety of planting material
You can also store the tubers by treating them with a clay mash. Peeled root crops are washed under running water, dried in the sun, lowered into a mash and dried again. The resulting dragee is sent to storage until spring.
Forming a bush
In the case when dahlias multiplied by tubers, each seedling is recommended to keep the two strongest sprouts, removing all others as early as possible. Cherenkovy saplings are grown, as a rule, in one stalk, sometimes pinching the top over the third internode to give pomp to the bush.
As a rule, dahlias are grown in 1 or 2, less often 3, of the stem, so as not to thicken the bush too much.
For large-flowered varieties, a mandatory measure is the regular and complete removal of all stepchildren formed on the stem - lateral shoots in the leaf axils. This is done as early as possible and as close as possible to the stalk. If the stepsons are not removed, especially on the lower part of the stem, the growth of dahlias slows down, flowering decreases, and the size of the flowers decreases. In addition, stepchildren located close to the ground often break off, and fungal infections can easily occur at the fault site, which will cause the death of the entire plant.
Removal of stepsons is carried out regularly, from the moment of planting and until the buds are formed. Side shoots are removed to the internode preceding where the bud was formed.
Important! Dwarf, pompom, collar and small-flowered species of dahlias are not stepson.
Quite a few species and varieties of dahlias need to be removed, not only the stepsons, but also the buds. This is especially true for those plants that are grown for further cutting or participation in exhibitions.
As a rule, buds on dahlia stalks are formed in groups of three. The average bud develops usually faster than the others, but at the same time it has a short peduncle, which is not very convenient for cutting. Therefore, the central bud is removed, after which the remaining two develop faster, have a longer peduncle and are distinguished by lush flowering.
During the flowering period, in order to preserve the decorativeness of the plant, faded blossoms should be removed daily, which spoil the appearance of the bush.
Formation of undersized bushes
Virtually all varieties of dahlias are distinguished by their high growth - from 160 cm and up. If you need to get a short growing plant, you need to follow this algorithm:
- At the end of February, parts of tubers are planted in nutrient soil and placed in a well-lit place at a temperature not lower than + 15-20 degrees.
- After the emergence of shoots leave 1-2, the most powerful. The rest can be used as cuttings.
- Above the fourth pair of leaves in the bush pinch the top.
- As a result, two stalks of one develop, each pinching again after the second pair of leaves.
With such a system, nipping a bush does not grow more than 1 meter in height. Pasony of such dahlias is carried out according to the general scheme.
Reproduction and preparation of tubers for planting
Dahlias are propagated by seeds, cuttings or parts of tubers. Since it is quite simple to grow dahlias from tubers, having obtained 3-5 new ones from a single tuber, this method is the most common. The root crops dug out in the fall in early April begin to prepare for planting. To do this, they are kept for 10 minutes in a solution of potassium permanganate and left in a warm, well-lit room for about a week.
Once the tubers appear sprouts 7-9 mm long, you can begin to divide. One average tuber, as a rule, can be divided into 3-5 parts. It is important to ensure that at least 2 buds remain on each delenka. For division, use a sharp knife, acting very carefully, so as not to damage the root neck.
Recommendation: if in the process of division dried up or rotten parts are found, they are removed, and the place of the cut is treated with crushed coal or foundation.
The prepared parts of tubers are planted for germination in boxes with a mixture of sawdust, peat, river sand and humus. In these boxes, they sit until the onset of sustained heat without return frost, when they are transplanted into open ground.
Reproduction by cuttings
It is recommended to replace old tubers with new ones obtained from germinated cuttings once every two years. Cutting dahlias allows you to update the planting material, retaining the varietal characteristics of the mother plant.
To upgrade, choose the healthiest and most consistent with the characteristics of the variety of tuber, planted it in the nutrient soil on the third of its height. After some time, sprouts begin to appear. When they reach a height of 2 cm, they are cut off and put on rooting.
After the appearance of sprouts, watering is reduced, and the temperature is lowered to + 15-17 degrees so that the cuttings are not drawn out
Root cuttings can be in the water or in the substrate. To speed up their rooting, they are recommended to be treated with stimulants. Pots or containers with cuttings covered with foil and placed in a warm, bright place.
Important! Uterine tuber after a while will release new shoots. In total, it can be removed up to 30 cuttings.