Anah Kruschke Rhododendron Anah Kruschke Rhododendron has reddish-purple flowers adorning this old time favorite with excellent foliage. This shrub is very hardy and sun tolerant. Primary Color: Purple Bloom Time: Late Height in 10 Years: 6' Hardiness (Temperature): -15 Sun / Shade: Sun Tolerant Landscape Category: Shrub Genus: Rhododendron More plants in: Hybrid Rhododendrons Find out if this plant is available: Rhododendron and Azalea Availability List