Catawbiense Album Rhododendron Catawbiense Album has lilac buds which open to pure white flowers are spotted with yellow. Vigorous and hardy growth habit. Excellent background shrub for your landscape. Primary Color: White Bloom Time: Late Height in 10 Years: 6' 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