Rhododendron micranthum grown over the area of Kyoung Puck, Kang Weon Province is showy and very attractive evergreen broad-leaned shrub of shade resistance. This shrub is considered very useful for exploiting as a garden plant. Environments, growth characteristics and vegetation association in the wild habitat and in the garden planted with this shrub, were investigated to find out some appropriate means of propagation and cultivation of this shrub. The results thus obtained were stated as follows ; 1. Light intensity for the native habitat ranged in the proximity of 9%. The most abundant stand of this shrub occurred in the northen side of mountains, while still some plants were found in the eastern sides also. 2. Soil of the native habitat was acidic (pH 4.4) and infertility. 3. Average elevation of the native habitat was shown to be 230m above the sea level. 4. The plant of the native habitat showed an average of 3.9 new shoots per branch, whereas that of the garden planted (light intensity 100%) showed 1.2, 5% of an average was for sun-burn leaves were noted, while garden Plants(light intensity 100%) showed 90% of them. 5. Other tree species associated with Rhododendron micrathum in the native habitat were primarily Pinus densiflora and secondarily Sorbus alnifolia, hemerocallis aurautiaca, Rubus crataegifolius, and Salix hulteni. 6. Vegetation rate of plant habitats in the Rhododendron growing area was observed to be 0 to 80% involving 27 to 50 species of associated trees in the vegetation for the 10${ imes}$10m quadrat area.