(Evergreen Azalea, Satsuki Azalea)
Prized for their large flowers and compact habit, these evergreen azaleas descend from Rhododendron indicum, Rhododendron eriocarpum, and other species and hybrids. Originating in Japan more than 300 years ago, they are popular there in traditional gardens and for bonsai.
Opening in late spring or early summer, the abundant funnel shaped blooms are borne singly or in few-flowered clusters near the ends of the branches. The flowers are most often single but may be semi-double,...
(Schroeder Hybrid Azalea)
The Schroeder Hybrids are a series of compact, exceptionally hardy evergreen azaleas hybridized by H. R. Schroeder of Evansville, Indiana. Like most evergreen azaleas, they prefer partial shade and moist, humus-rich, acid soil. They work well in shade gardens and mixed borders.
(Shammarello Hybrid Rhododendron)
Anthony Shammarello of Euclid, Ohio spent decades developing rhododendron and azalea hybrids that possess exceptional cold hardiness, a neat habit, and other desirable characteristics. Beginning in the 1960s he released a series of exceptionally hardy, compact to medium-sized large-leaf rhododendrons that exhibit a range of bloom times. He also introduced a number of evergreen azaleas.
The beautiful Shammarello rhododendrons are typically dense rounded shrubs with large shiny dark green leaves....
(Slocock Hybrid Rhododendron)
One of the most prominent families in twentieth century English horticulture, the Slococks of Woking, Surrey, introduced many rhododendron hybrids in the first few decades of the century. These large-leaved evergreens bear showy rounded clusters of wide-flaring funnel-shaped flowers in spring. The red, pink, orange, yellow, purple, or white blooms often have a contrasting blotch on their upper lobe. The medium-sized to tall plants have large leaves that are typically glossy dark green. Among the...
Gerald L. Klingaman
(Southern Indica Hybrid Azalea)
Southern Indica or sun azaleas are a terrific group of broadleaf evergreens with a hearty tolerance of heat and sunlight. Taller than most other evergreen azaleas, they form handsome broadly mounded bushes with rounded dark green leaves. Late winter and spring find them enveloped in showy clusters of large white, pink, red, or purple flowers. The funnel-shaped blooms often have a contrasting blotch. Although most cultivars bear single flowers, double- and semi-double-flowered selections are also...
Developed in the 1840s and 1850s by John Standish and Charles Noble at the renowned Sunningdale Nursery in Devon, England, these hybrids figure prominently in the development of the modern garden rhododendron, and are still valued for their toughness and beauty. Their wide-flaring funnel-shaped flowers are borne in large rounded trusses in spring. The red, pink, purple, or white blooms often have a contrasting blotch on their upper lobes. The upright rounded plants have large leathery leaves that...
(Vuykiana Hybrid Azalea)
Developed from the 1920s to the 1960s by Aart Vuyk of Vuyk van Nes Nursery, Boskoop, Holland, these evergreen azaleas include Kaempferi and Belgian Indica hybrids, 'Mucronatum,' and 'Maxwellii' in their ancestry. They bear clusters of funnel-shaped red, pink, orange, purple, or white flowers on small to medium-sized plants in spring. The funnel-shaped, often ruffled flowers are single or hose-in-hose (with two superimposed sets of petals). The blooms often have contrasting markings on their upper...
(Waterer Hybrid Rhododendron)
One of the horticultural dynasties of nineteenth and twentieth century England, the Waterer family introduced a diversity of large-leaved rhododendrons through their Knap Hill and Bagshot nurseries. Many are hybrids of hardy species including R. catawbiense, R. maximum, and R. ponticum. Their wide-flaring funnel-shaped flowers are borne in large rounded trusses in spring. The red, pink, purple, or white blooms often have a contrasting blotch...
Developed for greenhouse forcing by Henry Motzkau of the United States, these evergreen azaleas result from crosses involving Belgian Indica Hybrids and other hybrid azaleas. These compact shrubs bear a profusion of large pink, orange, red, purple, or white flowers in spring. Most have semi-double or double blooms. The leaves are small and elliptic to oval. Although developed primarily for container growing, they also do well in the landscape in mild climates.
Whitewater azaleas prefer partial...
(Whitney Hybrid Rhododendron)
William E. Whitney of Brinnon, Washington, developed numerous large-leaved rhododendron hybrids that are well adapted to the Pacific Northwest region of the United States, as well as to other regions. They bear showy rounded clusters of wide-flaring funnel-shaped flowers in spring. The red, orange, yellow, pink, purple, or white blooms often have a contrasting blotch on their upper lobe. The small to medium-sized plants have large leaves that are typically glossy dark green. Among the best-known...