Rhododendron dauricum

Rhododendron dauricum (2811-1978)
RRRhodoastra

Il semble y avoir des changements dans la nomenclature voir : Rhododendron ledebourii (Syn. dauricum ssp sempervirens) et le Rhododendrum dauricum ‘Album’.

JARS V44ne (À savoir)
Both R. dauricum var. sempervirens and R. ledebourii are non-deciduous and grow to between 7 and 8 feet after 20 years. Flower colour is purple with a touch of pink, although R. ledebourii tends to be a little warmer. The original R. dauricum var. sempervirens was obtained from Moscow by David Leach, who gave it to Peter Cox, who gave it to Joe. It is a well behaved plant and is considered to be attractive all year, however; its most important contribution is its ability to pass on its cold hardiness to its offspring, but comparatively little of its morphological properties. The size and growth habit of the other parent, the foliage, the size and colour of the flowering come through in the hybrids to a marked extent. Because of their early flowering, R. dauricum var. sempervirens and R. ledebourii were mainly used as pollen parents in the hybridizing program. Both species performed equally well in Saint John and in Toronto. Deciduous dauricum (type) as well as several other forms, such as the white form from Hokkaido, were also used. Rhododendron dauricum proved vastly easier to work with than did R. lapponicum . As a rule, and with only a few exceptions such as R. dauricum var. sempervirens x R. moupinense , R. dauricum was the pollen parent since it is one of the earliest flowering rhododendrons. Of the numerous crosses selected for long term evaluation the following hybrids have proven to be most.

Le Rhododendron dauricum est l’espèce la plus hâtive poussant au Québec.