The large leaved rhododendrons are more commonly grown in the Middle Atlantic area than the smaller scaley leaved rhododendrons. A few kinds of small leaved rhododendrons with tiny brown scales on the undersurface of the leaves can be grown in this area, but they are more difficult than either most azaleas or most large leaved rhododendrons. The small leaved types seem to grow better in a climate where summers are not excessively hot.
Many large leaved rhododendrons grow well in the Middle Atlantic area, though they require more attention to good growing conditions, especially excellent drainage, adequate moisture, a moderate amount of sunlight and good air circulation, than do evergreen and deciduous azaleas.
Some large leaved rhododendrons that do well in the Middle Atlantic area are:
'County of York'