(Dexter Hybrid Rhododendron, Rhododendron, Wyandanch Pink Rhododendron)
One of numerous hardy rhododendron hybrids developed in the 1920s and 1930s by Charles O. Dexter of Sandwich, Massachusetts, 'Wyandanch Pink' bears large showy domed clusters of purplish-pink flowers on broad upright vigorous plants. The wide-flaring, wavy-edged, funnel-shaped blooms open from rose-red buds in mid-spring. The flowers have a pale blotch and rosy speckles on their upper lobe. The large elliptic leaves are olive-green.
Like most rhododendrons, ''Wyandanch Pink' favors chilly...
(Rhododendron, Wynterset White Rhododendron)
A hardy dense hybrid with showy flowers in early to mid-spring, this evergreen rhododendron bears large domed clusters of pale purple flowers that age to greenish white. The wide-flaring, wavy-edged, funnel-shaped flowers are unscented. This wide-spreading head-high cultivar is densely furnished with long elliptic dull green leaves.
Like most rhododendrons, 'Wynterset White' prefers some shade and a highly organic acid soil that is evenly moist but well-drained. Plant it shallowly and mulch...
The U.S. National Arboretum
(Evergreen Azalea, Glenn Dale Azalea, Youth Azalea)
Comprising more than 400 cultivars, the Glenn Dale hybrid azaleas were developed from the late 1920s through the 1940s at the United States Department of Agriculture’s Plant Introduction Station at Glenn Dale, Maryland. This breeding program was initiated by Benjamin Y. Morrison, the first director of the United States National Arboretum. These relatively cold-hardy evergreen azaleas are complex hybrids involving many Asian and North American rhododendrons.
These small to medium-sized shrubs...
(Aichele Hybrid Azalea)
Developed for greenhouse growing but also doing well in the garden in mild climates, these evergreen azaleas were raised in the 1940s and 1950s at Carolina Flora Nusery in Mt. Holly, South Carolina. Kurume Hybrids figure heavily in their pedigree. They bear showy clusters of red, pink, or white flowers in spring. The funnel-shaped, often ruffled flowers are single or hose-in-hose (with two superimposed sets of petals). The plants are dense and compact.
These somewhat cold-tender azaleas prefer...
Bred in Mobile, Alabama, the Aromi deciduous azaleas result from crosses between Southeast United States natives (primarily Rhododendron austrinum) and hybrid azaleas such as the Exburys. These heat- and humidity-tolerant hybrids bear showy spherical clusters of large funnel-shaped flowers on upright plants with elliptic leaves. The more than 100 named cultivars bloom in a wide spectrum including white, pink, yellow, red, orange, and salmon. The single flowers are often fragrant, ruffled,...
(Belgian Indica Azalea)
Developed in Belgium using the East Asian species Rhododendron simsii, Rhododendron indicum, and Rhododendron murconatum, these hybrid evergreen azaleas were originally selected for greenhouse forcing but perform well in the landscape in areas where temperatures are moderate.
These shrubs are grown for their large long-lasting early-spring flowers and their compact mounding to spreading habit. The unscented, funnel-shaped, ruffled blooms are borne in clusters near...
(Beltsville Hybrid Azalea)
Comprising more than 40 cultivars, the Beltsville Hybrid azaleas were developed in the 1950s by Guy E. Yerkes and Robert L. Pryor of the United States Department of Agriculture’s Beltsville, Maryland, Station. Rhododendron kaempferi and its hybrids (including several Kurume hybrids) figure heavily in their pedigree. Their funnel-shaped, mostly single flowers come in a wide spectrum of colors. Most Beltsville azaleas have a bushy compact habit and small elliptic leaves. These somewhat cold-tender...
(Bobbink-Atkins Hybrid Azalea)
Developed in the 1940s by Bobbink and Atkins Nursery of East Rutherford, New Jersey, these evergreen azaleas are the result of crosses between Kaempferi and Kurume hybrids and the Japanese native Rhododendron indicum. They bear clusters of funnel-shaped red, pink, orange, or purple flowers on dense upright 4- to 6-foot plants in spring. The funnel-shaped, often ruffled flowers are single or hose-in-hose (with two superimposed sets of petals).
These somewhat cold-tender azaleas prefer...
(Brooks Hybrid Evergreen Azalea)
The product of crosses between Belgian Indica, Southern Indica, Kurume, and other hybrid azaleas, these heat- and drought-tolerant evergreen shrubs were bred in Modesto, California, by Leonard L. Brooks. Most bear large showy funnel-shaped flowers in mid- to late-spring. Flower color is usually white, pink, or red. The upright rounded medium-size plants have elliptical leaves that hold their glossy-green color year-round. Look for the white-flowered 'Madonna' and the pink 'My Valentine.'