The Right Light
Dappled sunlight and shade provided by tall pines and hardwoods with their lower branches removed works best. "You need a certain amount of sunlight to get blooms," he notes. "If it's too shady, you'll get fine foliage but no blossoms."
The Right Food
Use an azalea/rhododendron fertilizer at the rate recommended on the bag. Feed immediately after blooming, not before.