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- Better by offshoot than by cutting
Species of the genus Rhododendron, which also includes the azaleas, preferably multiply by offshoot rather than for cutting, because it is an easier method, which allows you to quickly obtain adult plants and which can be performed at any time of the year, including summer.
Multiplication by offshoots of Rhododendrons consists in bending a young branch of the mother-plant towards the ground: a portion of it, between its point of origin and its apex (in this portion there must be at least one node) is buried and fixed to the ground with a fork or with a hook; finally covered with a layer of soil of at least 5-8 centimeters.
To facilitate the issue of roots, a longitudinal incision is made on the portion of the branch that protrudes from the ground and which must always be kept vertical with the help of a brace. The offshoot operation can also be performed by burying the branch in a pot filled with soil placed near the mother plant. The soil must be acidic, not calcareous, moist and of medium texture.
With the potted offshoot system, at the time of transplant there will be no problems because it will be enough to separate the daughter plant from the mother. Up to the moment of transplanting the daughter-plant from the mother-plant, care must be taken to water well and regularly.
The genus Rhododendron, consisting of 500 species of evergreen and deciduous shrubs and trees, it includes both rhododendrons proper and azaleas, sometimes considered a separate genus. There Drought, as well as the cold intense, are deleterious for these plants, whose leaves roll up like cigarettes and become pendulous. In case of intense drought it is necessary to water and do mulches with peat is sphagnum.