Mountain laurel, belonging to the Rhododendron family, is an evergreen shrub or small tree. 3 meters high; Leaves alternate, sometimes opposite or with three impellers, elliptical, about 12 centimeters long, all edges leathery. The flowers are umbrella shaped inflorescences with glandular hairs at the top, rose red or white in color, flowering in late spring, with 5 capsules of fruit and many seeds. Mountain laurel is native to North America and was introduced to Japan from the United States. At that time, it was called American azalea, and there is no distribution of mountain laurel in China. Shan Yue Gui prefers acidic soil, so it is necessary to control the use of lime and plant ash. It is difficult to cut and press the mountain laurel. Therefore, it is possible to use the seedling method for sowing and reproduction. The seeds harvested in autumn can be harvested in March of the following spring