Rhododendrons have long been grown in British gardens. Admiring the beauty of the wonderful abundant flowering bush, admiring rhododendron gardeners put on the same level with a rose and is therefore often called him "Alpine Rose". In Russia began to cultivate rhododendrons for garden decoration only at the end of the XVIII century.
The best time of planting is considered rhododendron spring; bush should be planted in the garden or in front of the beginning of the growth, or at the very beginning of spring awakening plants. Before buying a favorite rhododendron, be sure to find out what species it belongs and what are the characteristics of this kind, what are its requirements for maintenance. This information will help to avoid further disappointments and is necessary for the correct choice of the location of the bush in the garden.
Novice gardeners recommended rhododendrons: Ledebour, Canadian, Japanese, yellow, Schlippenbach, kevtebinsky, korotkoplodny largest, vase, etc.. Suitable for the rock garden of rhododendrons: Canadian, dense, golden, rusty, red king, etc..
Do different types of rhododendrons because of their biological characteristics of the different needs in the light of the crown, in the soil and air humidity, different hardiness - to the data you need to navigate when buying plants and the choice of the landing site of the bush in the garden (it should be similar to the natural habitat this view).
The larger leaves of the rhododendron, the more humidity they need and the greater protection from wind and drafts they need. Protect rhododendrons from searing wind and drafts various garden buildings, hedges.
Some hardy deciduous rhododendrons grow well in full sun open areas (yellow, Japan, Kamchatka, et al.). But most of all rhododendrons planted in partial shade scattered - so that over the bushes was the open sky, but being near trees or buildings redkostoyaschie covered bushes from the midday heat. Rhododendrons like not hot (morning and evening) sun. When lighting is poor light demanding species of rhododendrons grow worse and bloom.
It is undesirable to near rhododendrons grow trees with shallow root system - competing roots, they will be deprived of the less powerful rhododendrons soil moisture and nutrition.
Hardiest rhododendrons - a relatively unpretentious natural species, and among them are particularly hardy, which successfully grow in the middle lane, and in very cold regions without shelter for the winter. Also breeders brought cold-resistant varieties of evergreen rhododendrons intended for regions with cold winters; they can withstand temperatures down to -35 degrees. Malozimostoykie species rhododendrons necessarily need a shelter for the winter.
Rhododendrons are placed in the garden singly or in groups, putting them on the slopes and along the tracks, on lawns, in rockeries, in garden compositions. When planting a few shrubs around it is recommended to maintain a distance: between the tall rhododendrons - about 2 m between srednerosloe views - about 1.5 m between stunted - 0.5-0.7 m.
Rhododendrons like loose, well-drained soil with acidic (pH 4.0-5.5), rich in humus. Most soil acidity require large-species rhododendrons. Alkaline or neutral substrates inhibit the growth of these plants; limestone, dolomite and ash completely inappropriate for rhododendrons. This feature of the plant is also necessary to consider, choosing only those fertilizers that do not change the acidity of the soil.
The root system of rhododendrons and compact surface. Therefore, when planting rhododendron bushes in a dense clay soil is prepared for him a wide (up to a meter), but small (half a meter) hole in the bottom of which is poured drainage (gravel, crushed granite, broken red bricks, pieces of slate, etc..) Layer of about 10 cm. As drainage for rhododendrons are not suitable (due to their content of calcium), the following materials: limestone rubble, pieces of concrete, broken white brick. Drainage can not be done only on the flood and well-drained sandy soils.
When planting rhododendron planting hole is filled with any acidic or weakly acidic fertile substrate availability. As part of the substrate can be: peat moss, ground sheet from the broad-leaved trees, heath land, humus needles of pine and spruce, a mixture of peat compost with sand, a mixture of peat and pine litter.
Experts recommend the following options substrate for rhododendrons:
- Ground sheet, peat moss, litter of coniferous trees in the ratio (3: 2: 1);
- Heath, ground sheet, coarse sand (3: 1: 1);
- Turf ground, sphagnum peat, coarse sand (1: 4: 1).
A number of other components of a variety of combinations of acidic fertile substrate required rhododendron. In the substrate can pour a little large sawdust stay in bed; it would be good to mix it in pieces of broken red bricks to retain moisture.
Also in the planting hole is recommended to add 30-50 g of special fertilizers for rhododendrons or any complex fertilizers (undesirable presence in it of calcium, and always - no chlorine!).
Dry root ball before planting rhododendron briefly immersed in water (until it stops allocated air) for moisture saturation. Bare roots during landing gently straighten and spread evenly in the landing pit, pressed them to the ground to provide better contact.
Rhododendrons tolerate transplanting, but landing will certainly need to see to it that was not recessed root collar. For this purpose, even specifically lift the neck above the ground (about 2 cm above the soil level), taking into account the further precipitation of the substrate, and the soil around the roots when planting is well compacted. Undemanding and hardy rhododendrons recommended to put a small (10-15 cm) hill - so provided the best conditions for root respiration.
Planted around the rhododendron bushes do well with boards and plenty of it shed to the ground as quickly as possible and firmly in contact with the roots of plants. After soaking water to fill up the hole in the substrate places its subsidence. When planting a rhododendron garden soil with a neutral reaction needs extra watering with a solution of magnesium sulfate; It is also recommended to make regular potassium phosphate.
The space around the bush planted necessarily need zamulchirovat (layer of mulch - 5-8 cm) to retain moisture in the soil to protect the roots from overheating and from potential damage to ensure plant organic nutrients to discourage the growth of weeds and soil erosion by water. It should not fall asleep mulch base of the plant (root collar) - you need to step back a little from it.
Near-wellbore area around the rhododendron bushes better zamulchirovat melkonarublennoy bark (but not from the willow and poplar). Also as mulch gardeners use peat moss, pine litter, moss, dry polupereprevshy list (better oak, but not from maple, chestnut and other broad-leaved trees), rotted cow manure; sawdust is not recommended.
For the first time after landing need pritenyat rooting rhododendron bushes from the sun and often spray them with water, especially in hot weather. In the absence of rain planted rhododendron requires regular watering. We can not allow any drying of the earth, nor water stagnation in the root zone - it is equally undesirable for rhododendron and leads to his death.
With heavy rains, with an accumulation of water around the bush is an urgent need to take measures to its removal. Better to water rhododendron soft water from a nearby natural pond, or specially softened water (by infusion in hard water peat), or to defend the water. Since the root system rhododendron surface, it is impossible to dig and loosen his tree trunks to avoid damaging the roots.