Content
- 1 Description of rhododendron Ledebour
- 2 The healing properties of Ledebour's rhododendron
- 3 Winter hardiness of rhododendron Ledebour
- 4 Growing conditions for rhododendron Ledebour
- 5 Planting and caring for Ledebour's rhododendron
- 6 Reproduction of rhododendron Ledebour (Maralnik)
- 7 Diseases and pests
- 8 Conclusion
Rhododendron Ledebourii is an ornamental shrub protected in nature reserves that grows naturally in Mongolia, Altai and Eastern Siberia. Since the 70s. XIX century the plant is used in ornamental gardening. As a horticultural crop is used in the northern and western part of Russia. This type of rhododendron is prized for its abundant, lush flowering and attractive plant appearance. In Altai, the period when rhododendron blooms is often compared to cherry blossom. It is believed that with the blooming of the first buds of Ledebour's rhododendron, spring finally comes to the region.
This shrub looks most advantageous in group plantings and in combination with conifers - this is how it grows in its natural environment.
Description of rhododendron Ledebour
Rhododendron Ledebour or Maralnik is a semi-evergreen shrub that belongs to the heather family. An adult plant reaches a height of 1.5 - 2.0 m and has approximately the same width. This rhododendron has thin branches pointing vertically upward. The bark of the trunks is gray, the branches are red-brown. Young shoots are shortly pubescent, have a light green, lime tint. The foliage of the plant is dense, soft, leathery texture. The leaf plate is medium-sized, up to 3 cm in length, has an elliptical shape, rounded at the top. Young leaves of rhododendron are bright olive, eventually acquiring a dark olive shade of green. As autumn approaches, they darken more and more and become brownish. In winter, the leaves curl into tubes and become like pine needles, and open with the onset of warmth. The plant sheds foliage when new shoots appear.
Flowers are especially attractive. No description of Ledebour's blooming rhododendron will be complete, and even a photo is not able to fully convey its beauty.
The flowering period is approximately 2 weeks and occurs in May. If weather conditions permit, the shrub can bloom again in late summer - early autumn. The flowers are numerous, large, up to 5 cm in diameter, pink, pink-purple or lilac. They have the shape of a five-petal bell, collected in inflorescences in the form of umbrellas. Flowers appear on last year's shoots.
Due to the high content of phytoncides, leaves and flowers have a pleasant aroma.
In September, fruits ripen in the form of a box up to 1 cm long.
Popularly, this type of culture is sometimes called wild rosemary, and is also often confused with the Daurian rhododendron. However, the species differ in the shape of the leaves and the color of the flowers: in Maralnik it is lighter. These differences are used by landscape designers who create interesting compositions with both types of shrubs.
The healing properties of Ledebour's rhododendron
Ledebour's rhododendron is used in folk medicine. The raw material is the leaves of the plant, which acquire medicinal properties for 2 - 3 years of life.They are harvested during the flowering period and quickly dried in ovens or warm rooms. It is impossible to dry raw materials in the sun.
Thanks to the tannins, vitamin C and many micro and macro elements included in the composition, this plant has healing properties.
Use infusions and decoctions from the leaves for colds, stomach diseases. The plant has a diaphoretic effect, is used as a diuretic, is used to normalize the activity of the circulatory system. It has been established that medicinal preparations from Ledebour's rhododendron have bactericidal properties and are active against microbes of the intestinal flora, staphylococci and streptococci.
Decoctions of rhododendron leaves and flowers are added to baths for the following diseases:
- sciatica;
- radiculitis;
- rheumatism;
- bursitis;
- gout;
- polyarthritis;
- nervous disorders;
- pain of a neuralgic nature, etc.
You can take medicinal preparations from this plant only after consulting a doctor. For children, pregnant women, people with serious kidney disease, as well as with tissue necrosis, treatment with rhododendron is contraindicated.
Winter hardiness of rhododendron Ledebour
This is one of the most frost-resistant plant varieties - rhododendron is able to withstand temperatures down to -30 ° C. The danger is spring night frosts, which can affect the buds. The plant is resistant to sudden changes in temperature.
Growing conditions for rhododendron Ledebour
Under natural conditions, the shrub grows in the shade of coniferous undergrowth on stony, water- and air-permeable soils with high acidity. Rhododendron of this variety feels good in a short cold summer, when the peak temperature does not exceed +23 ° C, and on average is +14 ° C, in winter the thermometer does not rise above -10 ° C.
When cultivating the Ledebour rhododendron, they take into account such characteristics as frost resistance, shade and moisture content and try to create similar conditions for it.
Planting and caring for Ledebour's rhododendron
Growing Ledebour's rhododendron is easy enough. The main thing is to correctly place the plant on the site and prepare a suitable soil. Further care comes down to watering, fertilizing, mulching, weeding, treatment against diseases and pests, and periodic replanting. If there is a need to loosen the ground, you should act with great care - the superficial root system of Ledebour's rhododendron is very sensitive to external influences. For the same reason, you should not dig up the soil around the plant.
Selection and preparation of the landing site
A place protected from direct sun is most suitable for growing this shrub. Dislikes Ledebour and drafts. The plant feels comfortable in the partial shade of other trees and shrubs. Ledebour's rhododendron, with its delicate superficial root system, coexists well with trees whose roots go deep into the ground, for example, chestnuts, pines, and horticultural crops.
A moisture-loving plant will be comfortable if there is a place for it next to a pond.
The soil is of particular importance. In natural conditions, Ledebour's rhododendron grows on acidic rocky soils; in cultural cultivation, the plant is provided with an acidic breathable substrate of peat, sand and the top layer of the soil of a coniferous forest.
Seedling preparation
It is best to buy a rhododendron seedling from a nursery or specialty store. At the same time, you can order planting material from reliable suppliers even via the Internet. For example, the specialists of the Sadovita store not only organize the delivery of guaranteed high-quality seedlings of the Ledebour rhododendron, but also advise on all issues of planting and care.
When buying a seedling in a nursery, you should pay attention to the presence of leaves and shoots. The more of them, the stronger and healthier the rhododendron and the better it will take root. Leaves should be even, evenly colored. You should not buy a plant that is too tall - the older the rhododendron, the worse it takes root in the open field.
Landing rules
Most often, cuttings are planted in the ground in early spring, before flowering, so that over the summer the rhododendron adapts to the climate and winters well. However, you can plant in the fall. Moreover, many growers claim that any time from March to October is suitable for transplanting, excluding the flowering period.
A distance of at least 100 - 150 cm is left between the bushes.
The landing procedure is as follows:
- dig a planting hole several times larger than the root system of the seedling;
- a drainage layer 15 - 18 cm thick is poured onto the bottom;
- a pre-prepared soil mixture of 4 parts of peat and 1 part of clay is poured on top and tamped a little;
- the seedling is covered with the remaining soil mixture to the level of the root collar;
- watering and mulching the soil;
- if buds have already formed on the shrub, some of them are cut off so that the plant does not spend all its energy on flowering and takes root faster.
According to the same algorithm, the Ledebour rhododendron is transplanted. Within two seasons after the rooting of the plant in a new place, the ripe flower buds are cut off so that all the forces are spent on the formation of the root system. Mulching of transplanted shrubs is mandatory.
Watering and feeding
Rhododendron is a moisture-loving plant, so in the summer it needs regular, if possible, daily watering with soft water. Hard water deacidifies the soil, which negatively affects flowering. For irrigation, you can use melt or rainwater. Many growers add peat to the water to acidify the water. The soil around the Ledebour rhododendron should not dry out, but moisture stagnation is also destructive. On especially hot and dry days, it is recommended to spray the crown from a spray bottle. A clear sign of a lack of moisture is leaf wilting. By autumn, watering is reduced, in winter it is stopped. In the fall season, rhododendron is watered sparingly and only in dry weather. The quality of its flowering in the next season directly depends on the amount of moisture received by the maral.
From time to time, rhododendrons need feeding. The first should be done after landing. You need to choose liquid fertilizers for plants from the heather family. As an organic feeding, cow dung, rotted compost or meat and bone meal are suitable. They are diluted with water at the rate of 1 part of the raw material for 15 parts of water and evenly irrigate the soil surface around the plant. It is not recommended to embed fertilizers directly into the soil so as not to damage the delicate superficial root system of the rhododendron.
Mineral fertilizers are applied in small doses: up to 2 tbsp. l. for 1 sq. m. area before flowering and 1 tbsp. l. after him. The lack of minerals can be suspected by a clear slowdown in shoot growth and yellowing of the leaves of the crop.
Pruning
The plant is pruned in early spring, before flowering. The main goals of this procedure are crown rejuvenation and stimulation of new shoot growth. At the same time, branches with a thickness of more than 2 cm are removed. The sections must be treated with garden varnish so that the plant is not infected with fungal infections and does not lose juice. Ledebour's rhododendron usually does not need to form a crown with the help of pruning.
Pruning old inflorescences stimulates the formation of new buds and allows for more intense flowering.
In order for the rhododendron bush to branch better, plucking of vegetative buds is used.
Preparing for winter
Ledebour's rhododendron is a frost-resistant shrub, but it must be prepared for freezing. In the fall, it is well watered, all plant residues are collected around the tree, and the neck of the plant is covered with dry oak leaves. When the first snow falls, it is collected in a slide, which will serve as a cover for the base of the bush.
In severe winters, before the onset of frost, it is recommended to cover the rhododendron, although in most cases this is not necessary. Spruce or pine spruce branches are laid between the branches, covered with a coarse cloth, for example, burlap, and loosely tied with ropes. They remove the shelter in the spring, when the snow begins to melt.
Reproduction of rhododendron Ledebour (Maralnik)
Like other varieties of rhododendrons, Ledebourg is propagated by seeds, cuttings and layering. Forcing plants from seeds is the least efficient way. Rhododendrons obtained in this way grow slowly and require special care.
Cutting also requires some effort, but full-fledged strong and well-flowering rhododendrons grow from cuttings. In early spring, branches that begin to become covered with bark are cut into 8 cm long and placed in a root growth stimulator for a day. When the roots begin to grow, they are planted in a box with a substrate consisting of 3 parts peat and 1 part sand. Cover with polyethylene on top. After about 4 months, the rooted cuttings of rhododendron are transplanted into separate containers with a peat-coniferous mixture (for 2 parts of peat - 1 part of needles). In the spring, the cuttings are taken outside and placed in the ground along with the boxes. They are brought back for the winter. Plants are transplanted into open ground only in the 3rd year.
It is most convenient to propagate the rhododendron by layering from an adult shrub. They do this in early spring, and in the fall they get new plants. You should choose the strongest shoots on the bottom of the bush, for each of them, dig a small groove about 20 cm deep, bend the branches and fasten them with wire hooks in the grooves. Top up with a substrate from a mixture of earth and peat. During watering of the mother plant, the layers must be watered. It is useful to add a root growth stimulant to the water for irrigation from time to time. In autumn, the shoots will take root, they can be separated from the main plant and transplanted to a permanent place. They can enter the flowering phase as early as next year.
Diseases and pests
Rhododendron Ledebour is resistant to diseases and pests. However, it, like other heather plants, can be attacked by fungal diseases. Rust and chlorosis are especially dangerous. Spraying the plant with copper sulfate will help to cope with these ailments.
Also, the shrub can be affected by pests: rhododendra bugs and flies, mealybugs, spider mites, sawflies, whiteflies and other insects. To get rid of them will help the treatment of infected plantings with insecticides, for example, Fitoverm or Aktar.
If the rhododendron is invaded by slugs or snails, it is enough to collect them by hand from time to time.
Conclusion
Ledebour's rhododendron is a shrub that can decorate any site. Many amateur gardeners consider it capricious, but its frost resistance, ease of reproduction and beautiful exotic appearance of a flowering plant are finding more and more fans. The Ledebour rhododendron is considered one of the most picturesque among all the rhododendron species.
With the organization of proper care, "Siberian sakura" will delight the eye all season: in spring and autumn with abundant gentle flowering, in summer - a lush, densely leafy crown.
