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Bob Stelloh | profile | all galleries >>  flora... >>  rhododendrons... >>  deciduous azaleas... tree view | thumbnails | slideshow

 deciduous azaleas...

Deciduous azaleas drop their leaves in the fall, and grow a new set of leaves in the spring. There are 16 species of azaleas native to areas of the US, and more species are native to Japan.

One way the species are distinguished from one another is whether the blooms appear before/with the leaves, or after the leaves appear. Other identifying characteristics include the bloom fragrance, color and shape, and (with the help of a hand lens) the hairs on the blooms, pedicel, calyx, new stems, and bud scales. The hairs on each of these plant features may be abundant, sparse or absent, and they may be glandular (sticky little balls on the ends which make them appear like little matchsticks) or eglandular (not glandular), or mixed.

There are also thousands of hybrids derived from these species, which are typically distinguished by their bloom color, type and time, and their foliage and plant habit—and by very carefully keeping the label intact.

Some deciduous azaleas are cold-hardy to Zone 3 (-40°F), while many more are cold-hardy to Zone 5 (-20°F) and warmer. R. austrinum, the "Florida flame azalea", is the most tolerant of warm temperatures, and is bred into other deciduous hybrid azaleas to increase their heat tolerance.
R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens

R. arborescens
MP 409.8 N

R. arborescens
MP 409.8 N

R. arborescens
MP 409.8 N

R. arborescens
MP 409.8 N

R. arborescens x cumberlandense

R. arborescens x cumberlandense

R. arborescens x cumberlandense

R. arborescens x cumberlandense

R. austrinum

R. austrinum

R. austrinum

R. austrinum

R. austrinum

R. austrinum

R. austrinum

R. austrinum

R. austrinum

R. austrinum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum

R. calendulaceum (semi-double)

R. calendulaceum (semi-double)

R. calendulaceum (semi-double)

R. calendulaceum (semi-double)

R. calendulaceum (semi-double)

R. calendulaceum (semi-double)

R. calendulaceum (semi-double)

R. calendulaceum (semi-double)

R. canescens, John Brown in foreground

R. canescens, John Brown in foreground

R. canescens

R. canescens

R. canescens

R. canescens

R. canescens

R. canescens

R. canescens

R. canescens

R. 'Choptank' seedling

R. 'Choptank' seedling

Copper Bald seedling

Copper Bald seedling

R. cumberlandense

R. cumberlandense

R. cumberlandense

R. cumberlandense

R. cumberlandense 00a361

R. cumberlandense 00a361

R. 'Dawn Chorus'

R. 'Dawn Chorus'

R. flammeum

R. flammeum

R. flammeum

R. flammeum

R. flammeum

R. flammeum

R. flammeum x viscosum x atlanticum

R. flammeum x viscosum x atlanticum

Girard's Yellow Pompom

Girard's Yellow Pompom

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. Gregory Bald seedling

R. 'Homebush'

R. 'Homebush'

R. 'Joseph's Coat'

R. 'Joseph's Coat'

R. 'Joseph's Coat'

R. 'Joseph's Coat'

R. 'July Joy'

R. 'July Joy'

R. 'Klondyke'

R. 'Klondyke'

R. 'Millie Mac'

R. 'Millie Mac'

R. occidentale

R. occidentale

R. occidentale

R. occidentale

R. occidentale

R. occidentale

R. 'Orangeade'

R. 'Orangeade'

R. 'Parade'

R. 'Parade'

R. prunifolium

R. prunifolium

R. prunifolium

R. prunifolium

R. prunifolium

R. prunifolium

R. Roan Mountain seedling

R. Roan Mountain seedling

R. Roan Mountain seedling

R. Roan Mountain seedling

R. sanctum

R. sanctum

R. 'September Song' seedling

R. 'September Song' seedling

R. 'September Song' seedling

R. 'September Song' seedling

R. 'September Song' seedling

R. 'September Song' seedling

R. 'Strawberry Ice'

R. 'Strawberry Ice'

R. vaseyi

R. vaseyi

R. vaseyi

R. vaseyi

R. viscosum

R. viscosum

R. viscosum

R. viscosum

R. 'Yellow Gold'

R. 'Yellow Gold'