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satsuki azalea [Rhododendron indicum (L.) Sweet]

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Explanations

Origin
This group relates to R. indicum and R. eriocarpam. Both species are native to Japan. In the early part of Syowa period, native cultivars are crossed Belgian azaleas for new flower colors. And around the Kanto district, new hybrid cultivars are popular with people.
Characteristics
Spreading, much-branched shrub, to 1m. Inflorescense 1-2-flowered. Corolla diameter 3.5-5cm.
Cultivars for bonsai have various flower colors. Flowering time is from the late ten days of May to the middle ten days of June at Kurume. Germination of shoots is before flowering.
Leaves dark green, shinning, hardy leaf fall, lanceorate to elliptic, 2-4×0.5-1.5cm. Leaf color of garden type cultivars change to beautiful red in winter.
Uses
green belt, garden, bonsai
References
Gardenlife 1976,"Tsutsusi sonosyurui to saibai" SeibundoShinkousya (in Japanese)
Gardenlife 1978,"Yasei no Tsutsusi" SeibundoShinkousya (in Japanese)
Gardenlife 1979,"Nippon no Engei Tsutsusi" SeibundoShinkousya (in Japanese)
Gardenlife 1985,tsuukan205 pp.103-106 (in Japanese)
Matsuo,T 1989,"Collected Data of Plant Genetic Resources" Koudansya scientific (in Japanese)