Rhododendron Deciduous Azaleas
- Most of the deciduous azaleas that are used in landscaping are hybrids of two, but usually more, species. Many of the species used in hybridization are native to eastern North American with additional species from Japan or
- Successful hybridization of deciduous azaleas was initiated in the 1820's by Mr. P. Mortier, a baker living in Ghent, Belgium. The plants from this series are known as the Ghent Azaleas.
- Many series (types) of hybrid deciduous azaleas were developed in the 1800's and new ones continue to be released. Some of the other noteworthy hybrids include: Mollis, Knapp-Hill-Exbury, and Occidentale Hybrids (see Deciduous Azaleas in the Rhododendron section).
- Detailed information on these and other azalea groups is provided in the authoritative book, Azaleas, by Fred C. Galle (1985, Timber Press).