Root rot can result if the azaleas stand in water for even a short time. Azaleas can also be reluctant to grow out into the surrounding soil once they are planted. Pot-grown azaleas are especially prone to this. If possible, find field-grown azaleas. To help pot-grown azaleas grow into the surrounding soil, be sure to score the root ball by running a sharp knife down the root ball in several places to encourage new root growth.
All azaleas are heavy feeders and enjoy a regular dose of fertilizer.
Azaleas produce their flower buds in the late summer or early fall of the previous year so pruning should only be done right after blooming. Azaleas will grow in sun or partial shade. More flowers are produced in sun, but shade-grown azaleas require less water and offer more brilliant colors.