Some Deciduous Azaleas Suitable for New Hampshire 



(continued) 



SPECIES 



arborescens (Sweet Azalea) Zone 5A (-20F). White flowers. Blooms in early to mid-Iuly and is very fragrant. Does 

 well in shade. Eight feet in ten years. If I could choose only one species, this would be it. 

 atlantkum (Coastal Azalea) Zone 5B (-14F, maybe -18). White flowers. Blooms late May to early June; fragrant. 

 Stoloniferous. Prefers sun. Six feet in ten years. 



bakeri (Cumberland Azalea) Zone 5A (-21 OF). Flowers various colors from red to yellow. Blooms mid-to-late 

 June. Partial sun. About four feet in ten years. 



calendulaceum (Flame Azalea) Zone 5A (-20F). Flowers red, orange, or yellow; the brightest of any azalea. 

 Blooms late May to early June. Partial sun or open woods. Eight feet in ten years. 



canadense (Rhodora) Zone 3B (-35F). Lavender flowers. Blooms mid-to-late May. Partial to full sun in damp lo- 

 cation. Three feet in ten years. There is also a white-flowered form "albiflorum" 



japonicum (lapanese Azalea) Zone 5A (-23F). Flower color ranges from yellow to orange to red. Blooms late May 

 to early June. Full sun, likes damp location. Six feet in ten years. 



mucronulatum (a deciduous rhododendron) Zone 5A (-20F). Purplish pink flowers. Blooms mid-April to early 

 May. Partial to full sun. Seven feet in ten years. Cornell Pink is a choice pink form of mucronulatum. It is just as 

 hardy and is to be preferred to the species. 



peridyminoides/'nudiflorum" (Pinxterbloom Azalea) Zone 4B (-25F). Flowers various shades of pink. Blooms in 

 late May. Partial sun or open woods. Six feet in ten years. 



prinophxfllumrroseum" (Roseshell Azalea) Zone 4A (-28F). Flowers pink to purplish pink. Blooms late May to 

 early lune. Partial sun or open woods. Twelve feet in ten years. 



prunifolium (Plumleaf Azalea) Zone 5A (-20F). Flowers from reddish orange to vivid red. Blooms mid-luly to 

 mid-August. Partial shade. Ten feet in ten years. 



poukanense (Korean Azalea) Zone 5A (-20F). Lavender flowers. Blooms in late May. Partial shade to full sun. 

 Three feet in ten years with very compact growth. Note that this hardiness rating is lower than most and is 

 based on my records and 30-year old plant in Concord, NH. 



vaseyi (Pinkshell Azalea) Zone 4B (-25F). Flowers pink — see "White Find" below. Blooms early-to -mid-May. Par- 

 tial shade. Eight feet in ten years. 



White Find is a very desirable white form of vaseyi, grows more slowly and is apparently not quite as hardy. 

 viscosum (Swamp Azalea) Zone 4A (-27F). White flowers with spicy fragrance. Blooms in mid-June. Partial shade 

 to full sun, tolerates wet soil. Eight feet in ten years. 



viscosum subspecies "glaucum" is a more desirable form because of its compact form and glossy leaves. 

 scMippenbachi (Royal Azalea) Zone 5A (-18F). Elegant pink flowers. Blooms in early May. Partial shade. Eight 

 feet in ten years with compact growth. Flowering time here (Dover) coincides with our early May frosts, so it 

 has not proven desirable for me. 



Note that the hardiness ratings shown do not always conform to current literature. Where different, the changes are based on the 

 New England rhododendron hardiness records maintained by the author since 1982. 



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