Swamp azalea (Rhododendron viscous) is a long-lived perennial shrub to small tree with fragrant white blooms. It occurs naturally in wet flatwoods, seep and bay swamps and along lake margins. It flowers late spring through summer after the leaves emerge. It is attractive to a variety of pollinators, including hummingbirds. Swamp azalea is Florida’s only white-flowered and summer-blooming rhododendron.