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Returned 3472 results. Page 210 of 348.

Image of Rhododendron

David C. Royster

(Evergreen Azalea, Glenn Dale Hybrid Azalea, Treasure Hybrid Azalea)

Displaying showy clusters of large, single, faintly pink-tinged white blooms in early to mid-spring, 'Treasure' 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 an eye-high, upright and spreading shrub, this vigorous cultivar has medium-sized oval leaves. The flowers are held on strong stems and drop after fading rather...

(Rhododendron, Trilby Rhododendron)

Combining good cold-hardiness and showy mid- to late-spring bloom, this hybrid rhododendron bears spherical clusters of deep crimson flowers. The wide-flaring funnel-shaped blooms have a small black blotch on their upper lobe. The open upright medium-sized plants have bright red first-year stems and large elliptic grayish-green leaves.

Like most rhododendrons, 'Trilby' favors chilly winters, moderate summers, and well-drained, humus-rich, acid soil. It departs from the norm, however, in tolerating...

Image of Rhododendron

Jessie Keith

(Rhododendron)

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...

Image of Rhododendron

Bosh Bruening

(Evergreen Azalea, Glenn Dale Azalea, Trouper Azalea)

Bearing showy clusters of large brilliant scarlet blooms in late spring, 'Trouper' is one of 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 chest-high, rounded shrub, 'Trouper' has fuzzy dark green oval leaves, some of which may be shed in severe winters. The funnel-shaped single flowers are held on strong stems and drop after fading...

Image of Rhododendron

James Burghardt

(Greer Hybrid Rhododendron, Rhododendron, Trude Webster Rhododendron)

First winner of the American Rhododendron Society's Superior Plant Award, this is one of many hybrids developed and introduced by Harold Greer of Eugene, Oregon. It bears spectacular immense conical clusters of rich pink flowers in mid-spring. The wide-flaring funnel-shaped blooms have a white blotch and red spots on their upper lobes. The dense upright medium-sized plants have long elliptic glossy green leaves.

Like most rhododendrons, 'Trude Webster' favors chilly winters, moderate summers,...

Image of Rhododendron

James Burghardt

(Rhododendron, Unique Rhododendron)

A winner of several plaudits including the Royal Horticultural Society's Award of Garden Merit, this hybrid rhododendron bears domed clusters of creamy white, pink-suffused flowers with red-speckled upper lobes. The wide-flaring funnel-shaped open from rose-pink buds from early to mid-spring. The dense rounded shoulder-high plants have leathery oval dark green leaves.

Like most rhododendrons, 'Unique' favors chilly winters, moderate summers, and well-drained, humus-rich, acid soil. Plant it...

(Rhododendron, Vinecrest Rhododendron)

One of relatively few rhododendrons that offer yellow flowers and superior cold-hardiness, this hybrid bears showy rounded clusters of fragrant greenish-yellow blooms in mid-spring. The flaring, funnel-shaped flowers have faint brown streaking on their upper lobes. This dense rounded chest-high shrub has long elliptic glossy olive-green leaves.

Like most rhododendrons, 'Vinecrest' favors chilly winters, moderate summers, and well-drained, humus-rich, acid soil. Plant it shallowly and mulch...

(Rhododendron, Virginia Richards Rhododendron, Whitney Hybrid Rhododendron)

Offering luscious pastel-toned flowers on compact plants, this is one of many large-leaved rhododendron hybrids developed by William E. Whitney of Brinnon, Washington. It bears generous spherical clusters of funnel-shaped wavy edged flowers that are soft pink with creamy undertones when they open in mid-spring. The blooms fade to pale yellow. The dense upright shoulder-high plants have elliptic yellow-green leaves.

Like most rhododendrons, 'Virginia Richards' favors chilly winters, moderate...

(Deciduous Azalea)

The clustered fragrant creamy white flowers of this Mollis Azalea open from pale yellow buds in late spring, before the foliage has fully emerged. The large funnel-shaped blooms bear a yellow blotch. This upright open deciduous shrub has elliptical leaves that color nicely in fall. It is extremely cold-hardy.

Developed in the late nineteenth and early twentienth centuries, Mollis Azaleas include Rhododendron molle and R. japonicum in their pedigree.

Azaleas...

Image of Rhododendron

David C. Royster

(Rhododendron, Vivacious Rhododendron)

Showy in flower and compact in habit, this hybrid rhododendron bears large spherical clusters of rich pure red flowers from mid to late spring. The wide-flaring funnel-shaped blooms are unmarked and unscented. This dense broad chest-high shrub has long elliptic medium-green leaves.

Like most rhododendrons, 'Vivacious' favors chilly winters, moderate summers, and well-drained, humus-rich, acid soil. Plant it shallowly and mulch well to conserve moisture and suppress weeds. Do any necessary...