(Greer Hybrid Rhododendron)
Harold Greer of Eugene, Oregon, has developed and introduced 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...
(Hachmann Hybrid Rhododendron)
Since 1951, Hans Hachmann and his son Holger have produced hundreds of outstanding rhododendron hybrids at their family nursery in Barmstedt, Germany. The product of more than 5000 crosses, Hachmann Hybrid rhododendrons are known for their cold-hardiness, prolific and colorful bloom, handsome evergreen foliage, and dense compact habit. The wide-flaring funnel-shaped flowers are borne in large rounded trusses in spring. The red, yellow, orange, purple, or white blooms often have a contrasting blotch...
(Hager Hybrid Rhododendron)
Kurume, Glenn Dale, Gable, Satsuki, and other hybrids all contributed to these evergreen azaleas developed by Don Hager of Spotsylvania, Virginia. They bear red, orange, purple, pink, or white flowers in spring on dense compact plants set with attractive foliage. The funnel-shaped flowers are typically single, although semi-double and double cultivars also occur.
Hager azaleas prefer partial shade and highly organic acid soil that is evenly moist but well-drained. Plant them shallowly and...
(Hardijzer Hybrid Rhododendron)
A group of hybrids between azalea cultivars and the small-leaved rhododendron R. racemosum, these "azaleodendrons" were developed by W. H. Hardijzer of Boskoop, Holland, in the 1950s and 1960s. These vigorous compact evergreen shrubs bear abundant clusters of small funnel-shaped blooms in early to mid-spring. The dense mounded plants have small, dark green leaves, which sometimes take on a reddish tinge.
Like most rhododendrons, Hardijzer Hybrids typically favor cool winters,...
(Harris Hybrid Azalea)
The Harris Hybrids are a group of evergreen azaleas introduced by James Harris of Lawrenceville, Georgia, in the 1970s and 1980s.
Most bear large, colorful flowers in mid- to late spring on compact or cascading branches. Like most evergreen azaleas, Harris Hybrids prefer partial shade and thrive in well drained, humus-rich, acid soil. They work well in many garden settings including woodland plantings, mixed borders, and containers.
(Hershey Hybrid Azalea)
The Hershey Hybrids are compact, evergreen azaleas deriving from the Kurume azaleas and hybridized by Hershey Azalea Farm of Gap, Pennsylvania. They bear red, orange, pink, purple, or yellow flowers in early to mid-spring on dense, mounded branches. The leaves are small and glossy. Partial shade and organic, moist, acid soil are necessary. Hershey Hybrids work well in foundation plantings, mixed borders, and containers.
(Hines Hybrid Azaleas)
Introduced by Hines Nursery of Irvine, California, these tender evergreen azaleas result from crosses among Belgian Indica Hybrids and other hybrid azaleas. They were selected for their compact rounded habit and their profusion of large funnel-shaped flowers from later winter into early spring. The clustered single, semi-double, or double flowers are sometimes fragrant. Flower colors include pink, purple, and rose. The small hairy lance-shaped leaves are glossy-green. Although developed partly for...
(Hobbie Hybrid Rhododendron)
Starting in 1939, Dietrich Hobbie of Linswege, Germany, developed and introduced a diversity of rhododendron hybrids involving more than 600 crosses. They bear showy clusters of wide-flaring funnel-shaped flowers in spring. The red, orange, pink, purple, lavender, or white flowers often have a contrasting blotch on their upper lobes. Leaf and plant size vary from small to large, although most Hobbie Hybrids are dense and compact. Among the best-known of these hybrids are the dwarf 'Scarlet Wonder'...
(Indian Hybrid Azalea)
Hybrids that have the East Asian species Rhododendron simsii, Rhododendron indicum, and Rhododendron murconatum in their ancestry, these evergreen azaleas were first developed in the nineteenth century for greenhouse forcing, but they also perform well in the landscape in areas where winters are moderate.
These shrubs are grown for their large long-lasting early- to mid-spring flowers on rounded compact plants. The unscented, funnel-shaped, ruffled blooms are borne...
(Kiusianum Hybrid Azalea)
Kiusianum Hybrid Rhododendron parentage traces back many centuries to southern Japan where it was found growing in open woodlands and high altitude hillsides, specifically on the Island of Kyushu. It is best described as a dwarf evergreen to semi-evergreen shrub with a dense spreading habit. Flowers are red, white, purple and typically pink. Kiusianum prefers partial sun to shade and soil rich with organic matter. Plant in traditional Japanese gardens, rock gardens or in a Rhododendron collection....