Edith Bosley Rhododendron Edith Bosley Rhododendrons have deep purple flowers with purplish-black markings. Shrub similar to Purple Splendour but with larger flowers and a hardier plant. Primary Color: Purple Bloom Time: Midseason Height in 10 Years: 4' Hardiness (Temperature): -25 Sun / Shade: Morning Sun, Afternoon Shade Landscape Category: Shrub Genus: Rhododendron More plants in: Hybrid Rhododendrons Find out if this plant is available: Rhododendron and Azalea Availability List