Azaleas tend to be smaller, compact, spreading plants with tiny, evergreen or deciduous leaves.
Growing Environment – Best to plant in shady areas but some varieties can take more sun. Azaleas are more widely adapted to warm summer temperatures than rhododendrons and can grow in all regions of the U.S. except the desert southwest and areas with very cold winters.
Ideal Soil – Highly organic, acidic and well-drained.
Blooms – Most azaleas completely cover themselves with early spring flowers in almost every shade except blue and green. They usually grow three to six feet high. Some deciduous types have good fall color.