Features: Rhododendron simsii or Azalea indica belongs to the genus Rhododendron that has more than one thousand species and many more hybrids and varieties by the thousands. Within the last four centuries, an increasing number of azalea cultivars were artificially selected and developed from the diversity of wild relatives and natural hybrids. Rhododendron simsii -- Formosa Azalea Page 3 October 1999 Figure 3. ... GENERAL CARE. Indoor Azalea – Rhododendron simsii. In its natural habitat in southern China, the Indoor Azalea lives in cool, very moist and very humid conditions. Greenhouse Rhododendron Simsii, commonly known as Azaleas are those beautiful, multicolored joys of spring, those bright spots in the grocery store or garden nursery when everything else is winter gray. The azalea, genus Rhododendron indictum, is one of the most sought after and satisfying of all bonsai subjects. It provides helpful information about the culture and care of rhododendrons and azaleas for both the novice and the experienced gardener. ... For this reason, great care must be taken when wiring and shaping branches. An evergreen flowering shrub or small tree of the subgenus Tsutsusi which is classified as evergreen azaleas, differing from deciduous azaleas in the subgenus Pentanthera. Folia ge of Formosa Azalea Use and Management Rich, moist, acid soil in light to medium shade, protected from winds, is an ideal location for Formosa Azaleas. First and foremost among its reasons for popularity is that it flowers spectacularly. Fundamentals of Rhododendron & Azalea Culture. Born in mountainous shrubs or pine forests at an altitude of 500-1200 meters above sea level, Rhododendron simsii Planch. Use the links in the index on the left to access various topics. is a typical acid soil indicator plant in central and southwestern China. This American Rhododendron Society publication is now made available on the world-wide-web. is an evergreen shrub of Dicotyledon, Rhododendron and Rhododendron. Rhododendron simsii (Indoor azalea), an evergreen azalea of the subgenus Tsutsusi, is the most widely cultivated Rhododendron species. Rhododendron simsii Planch. Posted on April 27, 2011 by Rupert Foxton-Smythe • 0 Comments. Plants grow fine with several hours of direct sun but grow best in filtered shade from tall trees.