Naturally, each situation is unique, so the answers may not be appropriate in every case. For more information, see our Readings page or consult with a local nurseryman. This cultural information is aimed primarily toward the mid-Atlantic region and may not apply to all areas. For example, the deep south has a more serious problem with root rot, and raised beds containing a good deal of pine bark are often called for there. Azaleas are rhododendrons, part of the Ericaceae or Heath family.
Plants commonly called azaleas have thinner, more pointed, hairy leaves.
The plants commonly called rhododendrons and azaleas are different enough, however, that they seldom cross-breed. Deciduous azaleas lose all their leaves in winter and are genetically different enough from the evergreen types that they rarely cross breed. Cultural requirements are pretty much the same for all rhododendrons, including the deciduous azaleas. Yes, azaleas can usually take more sun than rhododendrons without suffering leaf burn or desiccation. An elepidote rhododendron generally has larger leaves and no scales on the underside of leaves.