Cat Boursault Rhododendron is a hardy, broadleaf evergreen shrub valued for its rich lavender-pink to rosy-purple flower trusses, which appear in mid to late spring. Each rounded cluster is made up of 15–20 funnel-shaped blossoms with yellow-brown throat markings, adding depth to the floral display. The leathery, dark green foliage remains attractive year-round, forming a dense, rounded shape that makes it an excellent choice for screening, foundation plantings, or woodland borders. It is particularly admired for its reliability, cold hardiness, and bold flower color.