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It is the type species for the Tsutsusi section and subsection, and was the original Tsutsusi described by Engelbert Kaempfer in Japan in 1712, [5] from the Japanese name Kirishima-tsutsuji. Cultivation
Two subgenera are generally known to gardeners as "Azaleas", and include many fewer true species: Pentanthera, which comprises the deciduous azaleas, and Tsutsusi, which includes evergreen azaleas. [3] Modern cladistic analysis, based on nuclear genetics, proposes changes in the classification of species within subgenera.
Most are in the United States, with one species found in Canada and one being found in Mexico. North American azaleas are commonly confused with azaleas of Asian origin, the evergreen azaleas. North American azaleas are deciduous and produce two types of buds. One is a larger and produces about 20 flowers while the other bud produces a leafy ...
Azalea leafy gall can be particularly destructive to azalea leaves during the early spring. Hand picking infected leaves is the recommended method of control. [4] They can also be subject to Phytophthora root rot in moist, hot conditions. [5] Azaleas share the economically important disease Phytophthora cinnamomi with more than 3000 other plants.
Tsutsusi comes from the Japanese word for Azalea, Tsutsuji ( つつじ or ツツジ). When Don (1834) described the subdivisions of Rhododendron he named one of his eight sections, Tsutsutsi (sic), which he explained was the Chinese name of the first species described ( R. indicum , originally Azalea indica L.). [ 8 ]
The specific name simsii commemorates John Sims (1749-1831) who was the first editor of "Magazine Botanique". [3] This slightly tender species is quite rare in the west, though well known in Chinese gardens. [4]
western azalea; Pacific azalea Ericaceae (heath family) Rhododendron periclymenoides: pinxterbloom azalea Ericaceae (heath family) Rhododendron ponticum: Pontic rhododendron Ericaceae (heath family) Vaccinium: blueberries, cranberries, and sparkleberries; Vaccinium arboreum: sparkleberry; farkleberry Ericaceae (heath family) Vaccinium corymbosum
Satsuki azalea bonsai, 3.5" tall. Satsuki azalea is a cultivar group of the genus Rhododendron, a type of azalea extensively cultivated and hybridized by the Japanese. It is native to the mountains of Japan. Satsuki azaleas have a diverse range of flower forms and color patterns with multiple patterns often appearing on a single plant.