Rhododendron Red Jack is a bushy rounded evergreen shrub about 5 to 8 feet tall and 3 to 5 feet wide. Long, narrow, leathery green leaves provide year-round color. In May, terminal clusters carry 15 to 18 strong to vivid red, unmarked, funnel-shaped flowers, each about 1.5 to 2.5 inches across.
Grow it in partial shade in sheltered, humus-rich, moist but well-drained acidic clay, loam, or sand. The shrub suits cottage gardens, city courtyards, flowering borders, and large outdoor containers. Its red flowers attract pollinators, while the evergreen foliage provides a substantial garden presence after flowering.
Space plants about 5 feet apart. Keep the acidic soil moist but well drained and do not allow it to dry out. Routine pruning is not required, though damaged or unwanted shoots can be removed after flowering. Propagate by semi-ripe cuttings in late summer or layering in autumn. Monitor for vine weevil, leafhopper, lacebug, scale insects, caterpillars, aphids, powdery mildew, petal blight, bud blast, silver leaf, and honey fungus. The plant is harmful if eaten by people or pets; wear gloves and other protective equipment when handling.
