Rangoon Rhododendron Rangoon Rhododendron has dark red buds opening to dark red flowers. Buds create ornamental interest all year long. Sun tolerant. Broad spreading habit. Primary Color: Red Bloom Time: Early Midseason Height in 10 Years: 3' 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