Foliage: Evergreen broadleaf
Height: 3 to 8 feet (depending on cultivar) Spread: 4 to 8 feet (depending on cultivar) Shape: Upright, spreading
There are hundreds of evergreen azalea cultivars which vary in hardiness, size, form, flower color, time of flowering, and foliage. The primary attractive feature of azaleas is the very attractive and showy flower display in spring.
Zone: 5b to 9 (depending on cultivar)
Light: Partial shade
Moisture: Moist to average
Soil Type: Sandy to loam to clay loam
pH Range: 3.7 to 6.5
Suggested uses for this plant include massing, border, and foundation plant.
Plant azaleas in a site that has afternoon shade to protect plants from the hot summer sun. Do not plant in poorly drained or heavy soils. Plant in well-drained, acid soil.
If drainage is a problem, plant in raised beds, or install drainage tile to drain water away from plants. Evergreen azaleas should be primarily selected on the basis of their hardiness (tolerance to low winter temperatures), so consult local garden center personnel to determine what azaleas are suitable for your plant hardiness zone.
Spread a good, organic mulch to control weeds, maintain soil moisture, and protect tender shallow roots.
To maintain form and size, pinch off soft, new shoots of vigorous growing plants soon after flowering.
Iron chlorosis (leaves turn yellow between veins, but veins remain green) is a problem in high pH soils. Some common insect problems are the azalea lacebug, aphids, leaf miners and tiers, scale insects, and whitefly.
Common diseases are Phytophthora root and crown rot, Ovulinia petal blight and powdery mildew.
Virginia Cooperative Extension materials are available for public use, reprint, or citation without further permission, provided the use includes credit to the author and to Virginia Cooperative Extension, Virginia Tech, and Virginia State University.
Virginia Cooperative Extension is a partnership of Virginia Tech, Virginia State University, the U.S. Department of Agriculture, and local governments. Its programs and employment are open to all, regardless of age, color, disability, gender, gender identity, gender expression, national origin, political affiliation, race, religion, sexual orientation, genetic information, military status, or any other basis protected by law.
October 10, 2018