The Kurume hybrid azaleas of Japan owe their parentage to several species of mountain azaleas, predominantly R. sataense with R. kiusianum. Formerly, the Kurume hybrids were grouped under R. obtusum, but modern horticulturists now consider R. obtusum a hybrid and […]
Rhododendron ( Rubens Ghent Hybrid Azalea )
The artificial species name R. gandavense is often used for all the cultivars of the Ghent Hybrids. These hardy plants originated in Belgium and England in the 1800s from crosses between many different species. This cultivar is an Old Ghent […]
Rhododendron ( Rozanne Waterer Knap Hill Azalea )
Upright, hardy, deciduous shrub with elliptic to oblong, 2 to 6 inch long leaves. Double, trumpet-shaped, white flowers with a red tinge and dark pink throats, 2 to 3 inches wide. Flowers are borne in huge, showy trusses of 18 […]
Rhododendron ( Royalty Gable Hybrid Azalea )
Spreading, low-growing, evergreen shrub said to be the hardiest azalea around. Single, widely funnel-shaped, rich mauve flowers, 1 1/2 inches wide. Leaves are glossy, dark green, lance-shaped to ovate, around 1 inch long. Flowers are borne in showy trusses from […]
Rhododendron ( Royal Robe Greenwood Hybrid Azalea )
Compact, rounded, evergreen azalea that was developed to thrive in temperate climates and is hardy to 0 degrees F. Single, hose-in-hose, funnel-shaped, dark purplish-red flowers, 3 1/2 inches wide. Flowers are borne in showy trusses from mid to late spring. […]
Rhododendron ( Royal Lodge Knap Hill Azalea )
‘Royal Lodge’ is a late-season bloomer with vibrant red flowers and long, protruding stamens. Knap Hill / Exbury Hybrids are both English bred crosses. They are upright, 4 to 10 feet tall and 4 to 6 feet wide. Trusses of […]
Rhododendron ( Royal Crown Greenwood Hybrid Azalea )
Compact, spreading, evergreen azalea that was developed to thrive in temperate climates and is hardy to 5 degrees F. Semi-double, hose-in-hose, funnel-shaped, dark purplish-red flowers, 3 1/2 inches wide. Flowers are borne in showy trusses from mid to late spring. […]
Rhododendron ( Royal Command Exbury Azalea )
Upright, hardy, deciduous shrub with elliptic to oblong, 2 to 6 inch long leaves. Single, trumpet-shaped, bright reddish-orange flowers, 2 to 3 inches wide. Flowers are borne in huge, showy trusses of 18 to 30 blooms per cluster. Bloom time […]
Rhododendron ( Roundelay Glenn Dale Azalea )
The Glenn Dale evergreen hybrids were developed in Maryland from R. indicum, R. kaempferi, R. simsii and many other species and hybrids. They are compact, spreading, evergreen azaleas developed primarily for cold hardiness along the mid-Atlantic states. Flowers are borne […]
Rhododendron ( Rothschild Supreme Knap Hill Azalea )
Upright, hardy, deciduous shrub with elliptic to oblong, 2 to 6 inch long leaves. Double, trumpet-shaped, yellow flowers, 2 to 3 inches wide. Flowers are borne in huge, showy trusses of 18 to 30 blooms per cluster. Bloom time is […]