Japanese rhododendron is popularly called the "rose tree". This plant is one of the most popular among gardeners in the UK. Japanese rhododendron strikes with its beauty. Shrub, abundantly covered with flowers, will not leave indifferent any gardener.
There are only two conditional groups of rhododendrons: evergreen and deciduous. In nature, both of these types grow in areas with a rather mild climate - mainly in the wet highlands of Asia and North America. Therefore, only specially bred frost-resistant varieties are suitable for growing in central Russia. Heat-loving rhododendrons of Russian winters do not tolerate completely, freezing, even being carefully covered for the winter.
Rhododendron schlieppenbach: description and origin
Rhododendron schlieppenbach - one of the most beautiful shrubs. Named in honor of the naval officer - Alexander Egorovich Schlippenbach. Namely, Alexander Egorovich collected this plant during an expedition to Korea in 1854.
Its homeland is the north and the central part of the Japanese islands. It grows on stony dry mountain slopes or in light forests. The plant is able to withstand temperatures down to - 26 ° C.
Rhododendron is a shrub in the wild that can reach up to 2 meters in height.
The leaves have a juicy green shade and an elongated oval shape. The tips of the leaves are twisted inside. The leaves and flowers on the shrub bloom at the same time. This unusual plant blooms in April-May.
Deciduous rhododendrons are resistant to frost down to -26 degrees. In the winter they are covered in order to protect from the severity of snow and sun. To do this, an adult plant binds the branches together, trying not to damage the buds. Pegs are fastened around the perimeter, on which the covering material is attached. That's all the care of these Japanese azaleas!
This species is differently called Pontic Azalea. According to reviews, on home gardens the yellow rhododendron should be grown only by those summer residents who do not have small children and domestic animals. The fact is that this species is a poisonous plant. The main distinguishing features of this group of varieties include spreading crown and a pleasant fragrance of flowers. In height, rhododendron yellow can reach two meters. His appearance is very spectacular. Large fragrant flowers are collected in thick brush, and the leaves have a bright green saturated color.
Preparing for the winter
Japanese rhododendron salmon is frost-resistant and can survive the winter without shelter. But no one predicts whether the winter will be snowy. Therefore, it is better to be safe and prepare the plant for the winter. Also, young bushes up to two years old need mandatory shelter.
In addition to shelter, rhododendron needs to receive moisture in winter. To do this, during the period before frosts (from early autumn), you need to water the plant every other day, about 12 liters of water. After that, a thick layer of pine bark mulch is laid. When frosts come on, the lower branches are covered with compost. Pine needles or peat can be used.
To shelter a tree from snow and sun, you need to carefully tie the twigs together without damaging the buds. Drive pegs around the bush and attach a covering material to them. This may be sacking, agrotex or even a hand-made “house” of polypropylene.
When the frosts stabilize and the thermometer scale does not have a temperature below -10 degrees, then the shelter must be removed to prevent sub-heating. It is necessary to remove the shelter gradually, so that the sun does not burn it. Enough to make air access.
If you do everything consistently and with love, then zeal will be rewarded with the lush flowering of the Japanese rhododendron. Fill up the garden with this unique shrub, with proper care, it will delight you from year to year.
Japanese rhododendron varieties
In Europe, the species of the Japanese rhododendron has been known since 1861. Around the same time, Anthony Waterr Sr. took up his selection with Gents azaleas. He got a lot of charming beauty varieties. And since then, the Japanese species of rhododendrons has become widely used in breeding.
Consider the most popular varieties:
- Japanese rhododendron salmon. Winter-resistant deciduous shrub, grows over the year by 20-25 cm, grows up to 2 meters. Its flowers have a large yellow-orange spot, completely pink in color with a delicate orange shade (salmon). This is one of the most common rhododendrons.
- Japanese rhododendron cream. The bush is shorter compared to other typical varieties of Japanese rhododendrons. The flowers of the plant are greenish-cream with yellow streaks. In autumn, the creamy rhododendron changes the color of the leaves from green to yellow.
- Rhododendron yellow. It grows thickets, gives long shoots of different sizes, so the bush has a chaotic shape. Yellow, bright shade of flowers persists during flowering for about 20 days. The photo shows what the uniqueness of this variety is: inflorescences consist of more than 20 flowers.
How to choose a place on the site
These are grown in most cases, domestic gardeners rhododendrons. Frost-resistant varieties, the price of which is quite high (about 500-700 r. Per sapling), care, however, require careful. First of all, under the plants should choose the right place. Most rhododendrons are sun-loving plants. However, with constant exposure to UV rays, burns may appear on their leaves. According to the reviews, the best solution would be to plant a rhododendron in the vicinity of a tree, so that it is slightly shaded. Strong wind, these plants can not tolerate. Therefore, it is not recommended to plant them on hillocks in places not protected from constant movement of air masses.
What should be the soil
The best soil composition for rhododendrons is as follows:
leaf earth - 3 parts,
softwood primer - part 1,
high peat - 2 parts.
The high level of groundwater is something that these plants do not like very much. Frost-resistant varieties grown in Russia feel much better in drained areas.
How to land
Under the rhododendrons at the site do not too deep holes - about 50 cm (without drainage). Before planting, the roots of plants must be soaked in water for 24 hours along with an earthy clod. The distance between the bushes is maintained depending on the height of the variety. For stunted rhododendrons, this figure is 50 cm, medium - 1.2 m, high - up to 2 m.
Planted plants in such a way that their root neck is located on the surface. If it is buried, flowering from the bush in the future, the owners of the suburban area will not wait.
The soil under the planted rhododendron should first be thoroughly shed. Then, the trunk circle is mulched with sawdust, moss or peat with a layer at least 5 cm thick.
How to water and fertilize
Winter-hardy rhododendrons, the species and varieties of which were examined by us above, will please their owners with beautiful flowering, of course, only with proper care. Gardeners recommend feeding these plants twice a year: after the snow melts and after flowering. As a fertilizer is usually used slurry (0.5 liters per 10 liters of water). Rhododendrons are watered frequently, preventing the soil from drying out in the bore circle.
Thus, we have examined in full detail what kind of plant it is - rhododendrons (frost-resistant varieties, price, cultivation are now known to you). As you can see, these beautiful original ornamental shrubs require constant care. Those gardeners who do not have time to regularly visit the country site, reviews are not recommended to plant rhododendrons. Without regular watering, these plants simply dry quickly, and the money for seedlings will be wasted.