Comments. Submit. Dwarf azaleas are hybrid varieties of regular azaleas. Their growing zones are more limited than the larger hardy azaleas, but they last for many years when planted in those areas.Dwarf azaleas do well growing under windows, as border plants and they can be grown in containers as well.omments. Submit. Dwarf azaleas are hybrid varieties of regular azaleas. Their growing zones are more limited than the larger hardy azaleas, but they last for many years when planted in those areas.