(Purple Splendour Rhododendron, Rhododendron, Waterer Hybrid Rhododendron)
Introduced more than 100 years ago but still widely regarded as the quintessential purple-flowered rhododendron, this Waterer Hybrid bears showy rounded clusters of royal purple flowers in mid- to late spring. The wide-flaring, frilly-edged funnel-shaped blooms have a striking black-purple blotch on their upper lobe. This compact, upright, head-high shrub has large glossy dark green leaves with prominent midribs.
One of the horticultural dynasties of nineteenth and twentieth century England,...
(Catawba Rhododendron, Catawba Rosebay, Purpureum Elegans Rhododendron)
Introduced more than 150 years ago but still popular for its exceptional cold-hardiness and its showy bloom, this Waterer hybrid of Rhododendron catawbiensebears large domed clusters of lavender-purple flowers from mid- to late spring. The wide-flaring, funnel-shaped blooms have a pale blotch and maroon spotting on their upper lobe. This vigorous upright medium-sized shrub has large, elliptic, glossy dark green leaves.
One of the horticultural dynasties of nineteenth and twentieth...
(Purpureum Grandiflorum Rhododendron, Rhododendron, Waterer Hybrid Rhododendron)
Introduced more than 150 years ago but still well worth growing for its exceptional cold-hardiness and colorful blooms, this Waterer Hybrid bears showy rounded clusters of medium purple flowers from mid- to late spring. The wide-flaring, funnel-shaped blooms have a golden orange blotch on their upper lobe. This compact, upright, head-high shrub has large leathery convex leaves.
One of the horticultural dynasties of nineteenth and twentieth century England, the Waterer family introduced a diversity...
(Queen Alice Rhododendron, Rhododendron)
Floriferous and compact, this Rhododendron degronianum var. yakushimanum hybrid bears showy domed clusters of beautiful appleblossom-pink flowers in mid-spring. The funnel-shaped blooms open from rich cherry-red buds. This dense, mounded, waist-high shrub has medium-sized, elliptic, dull green leaves.
Like most rhododendrons, 'Queen Alice' favors chilly winters, moderate summers, partial shade, and highly organic, well-drained, acid soil. Plant it shallowly and mulch...
(Rainbow Rhododendron, Rhododendron, Slocock Hybrid Rhododendron)
Offering a color pattern not often seen among rhododendrons, 'Rainbow' bears showy clusters of rose-rimmed, white-eyed flowers in mid-spring. The wide-flaring, funnel-shaped blooms are unscented and unmarked. This rounded upright medium-sized shrub has large ellpitic glossy green leaves. It was raised and introduced by W. C. Slocock of Woking, England, patriarch of one of the most prominent families in twentieth century English horticulture.
Like most rhododendrons, 'Rainbow' favors chilly...
Showy clusters of mildly fragrant purplish-pink flowers adorn this compact evergreen azalea in mid-spring. The wide-flaring, starry, funnel-shaped blooms have red-spotted upper lobes. This dense low spreading shrub has small rounded leaves.
Bred for their low spreading habit and good cold-hardiness, Carlson Hybird azaleas were developed after 1960 by Bob and Jan Carlson at their nursery in South Salem, New York. They are hybrids of 'Mucronatum', an ancient white-flowered cultivar from Japan. These...
Bearing showy clusters of large, brilliant orange-red, maroon-blotched flowers in spring, 'Red Bird' is one of the more than 400 evergreen azalea hybrids developed from the late 1920s through the 1940s at the United States Department of Agriculture’s Plant Introduction Station at Glenn Dale, Maryland.
Eventually forming a shoulder-high shrub, this dense upright cultivar has narrowly oval mid-green leaves. The funnel-shaped flowers are held on strong stems and drop after fading rather than...
(Evergreen Azalea, Red Formosa Azalea, Southern Indica Hybrid Azalea)
A heat-tolerant Southern Indica Hybrid, this evergreen azalea bears showy clusters of large reddish purple flowers from early to mid-spring. Red freckles dot the upper lobes of the broadly funnel-shaped single flowers. This upright rounded head-high shrub has handsome dark green leaves.
Selected in the Southeast United States for their tolerance of hot humid conditions, Southern Indica azaleas descend from the Belgian Indica Group. Their ancestry includes the East Asian species Rhododendron...
David C. Royster
One of numerous hardy evergreen azaleas hybridized by Anthony Shammarello of Euclid, Ohio, this aptly named cultivar bears numerous clusters of intense red funnel-shaped flowers in mid-spring. They have no contrasting marks. This compact broadly upright plant has glossy olive-green leaves that turn red and yellow in fall.
Give 'Red Red' partial shade and humus-rich, acid, moist, well-drained soil. Plant it shallowly and mulch well to conserve moisture and suppress weeds. It does best in warm...
Gerald L. Klingaman
One of the Rutherford Hybrid azaleas, this evergreen shrub bears showy clusters of ruffled rose-red flowers from early to mid-spring. It may also bloom in fall and winter in frost-free climates. The flowers are hose-in-hose (with two "stacked" whorls of petals). The compact rounded plants have elliptic mid-green leaves.
Tracing their ancestry to the Kurume Hybrids as well as to several East Asian species including Rhododendron simsii, R. indicum, and R....