
(Pieris japonica)

Japanese andromeda, Japanese pieris, Lily of the valley shrub, Pieris
Pieris japonica is an evergreen shrub native to eastern China, Taiwan, and Japan. The plant has a dense, compact habit and produces clusters of small, bell-shaped flowers in early spring. The leaves are glossy, dark green, and leathery, and the new growth is often bronze or red in color. Pieris japonica is a popular ornamental plant in gardens and landscapes around the world.
4-12 feet (1.2-3.7 m)
Pieris japonica prefers partial shade to full sun. In hot climates, it benefits from some protection from the afternoon sun.
This plant prefers moderate to high humidity levels. It may benefit from misting or placement near a humidifier.
Fertilize in early spring with a slow-release, acid-loving fertilizer. Avoid fertilizing in late summer or fall, as this can stimulate new growth that may be damaged by winter cold.
Prune after flowering to maintain the shape of the plant and remove any dead or damaged branches. Pieris japonica can be pruned quite heavily if necessary.
Common pests include lace bugs, spider mites, and scale insects. Diseases such as leaf spot and powdery mildew can also occur.
12-36 inches (30-91 cm)
Water regularly, keeping the soil consistently moist but not waterlogged. Pieris japonica is sensitive to drought and may suffer if the soil dries out.
Pieris japonica prefers cool to moderate temperatures, between 45-65°F (7-18°C). In hot climates, it benefits from some shade and protection from the sun.
Pieris japonica grows best in the spring and summer months.
Pieris japonica is moderately difficult to grow. It requires specific soil and light conditions, and can be sensitive to changes in temperature and humidity.
USDA hardiness zones 5-8
In Japan, Pieris japonica is known as 'kuro-yanagi' or 'black willow' because of the dark color of its branches and twigs.