Plant Rhododendron cat. 'Lee's Dark Purple' (Rhododendron 'Lee's Dark Purple') where you can enjoy its bold, dark purple spring flower trusses and glossy evergreen foliage all year. This broadleaf evergreen shrub develops a dense, rounded habit and typically matures around 72-84 inches tall, making it an excellent foundation or woodland-edge accent in cooler climates.
Give it acidic, humus-rich soil that stays evenly moist but drains well. Work in organic matter at planting time, keep the root zone cool with a generous mulch layer, and water during dry spells so the shallow roots never dry out. Avoid alkaline amendments and choose a sheltered site protected from harsh winter winds for best performance.
Light is best in part shade, especially with morning sun and protection from hot afternoon sun; it also tolerates full shade where it may bloom less heavily. Space plants for good air movement and plan on a mature footprint similar to the listed spread so the shrub can fill out naturally without crowding.
Little pruning is needed. If shaping is desired, prune just after flowering. With appropriate siting and soil care, this rhododendron is a long-lived landscape shrub suited to USDA Zones 4-8.