Auburn University Horticulture Department, Auburn, AL
(Evergreen Azalea, Satsuki Hybrid Azalea, Yama-no-Hikari Evergreen Azalea)
The Satsuki Azalea ‘Yama-no-hikari' is a broadleaf evergreen shrub whose large single white blooms are striped, flecked, or tinged coral-pink. Solid pink flowers also occur. The many funnel shaped blooms are borne in few-flowered clusters in mid- to late spring. The small leaves are elliptical and glossy green. The low slow-growing plants are spreading, well branched and dense.
Prized for their large flowers and compact habit, Satsuki Azaleas descend from Rhododendron indicum, Rhododendron...
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...
(Back Acres Hybrid Azalea)
The Back Acre Hybrids are a series of compact, evergreen azaleas hybridized by Ben Morrison —developer of the Glenn Dale azaleas —after his retirement to Pass Christian, Mississippi, in 1964. These fine flowering shrubs bear pink, purple, red, or white flowers in spring.
Back Acre azaleas are best adapted to areas with warm summers and mild winters such as the southeastern United States. Like most evergreen azaleas, they prefer partial shade and moist, humus-rich, acid soil. Azaleas are perfectly...
(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.'
(Carla Hybrid Azalea)
Bred to grow vigorously and bloom heavily in the heat, humidity, and drought of the Southeast United States, these evergreen azaleas were developed from 1960 onward at North Carolina State and Louisiana State universities using Kurume, Kaempferi, Belgian Indica, and Satsuki hybrids. Their broadly funnel-shaped single, semi-double, or double blooms are usually red, orange, or pink, often with a contrasting blotch. The dense, rounded, typically compact plants have small elliptic medium- to dark-green...
(Carlson Hybrid Azaleas)
Bred for their low spreading habit and good cold-hardiness, these evergreen azaleas were developed after 1960 by Bob and Jan Carlson at their nursery in South Salem, New York. Hybrids of the antique Japanese cultivar 'Mucronatum', they bear white or pink single flowers in mid-spring. The wide-flaring, starry, funnel-shaped blooms often have contrasting speckles on their upper lobes. The leaves are elliptic and relatively small.
These azaleas prefer partial shade and highly organic acid soil...