Rhododendrons (Rhododendron spp.) are flowering shrubs that are hardy in U.S. Department of Agriculture plant hardiness zones 4 through 9, depending on the variety. The fastest-growing rhododendron cultivars grow 7 feet in 10 years, according to the American Rhododendron Society's website.

Rhododendron maximum, commonly called rosebay rhododendron or great laurel, is a large, upright, loose, multi-stemmed, late-blooming, evergreen shrub that is native to North America from Ontario and Nova Scotia south to Ohio, Alabama and Georgia with a concentration of plants in the southern Appalachian Mountains where.

Uses. Rosebay Rhododendron is a highly useful shade shrub - It is one of the most shade-tolerant shrubs in North America. It is also one of the faster-growing rhododendrons, often putting on 8-12" trusses each year. Use Rosebay as a backdrop for a shade garden, or as a screen for a shady yard.

Great-laurel or rosebay rhododendron is a loose, open, broadleaf evergreen with multiple-trunks, upright branching, and the largest leaves of all native rhododendrons. The plant grows 4-15 ft. in the north, but can grow 30 ft.. . . . .364011234973!]0000000000000009783314146475!]