Rhododendron 'Queen of Hearts' (Queen of Hearts Rhododendron)
Botanical Information
Family | Ericaceae |
Genus | Rhododendron |
Cultivar | 'Queen of Hearts' |
Category | Woody |
Type | Shrub (evergreen) |
Origin | Hybridized by Rothschild (1949). Parentage (Seed Parent x Pollen Parent): meddianum x Moser's Maroon |
Details
USDA Hardiness Zone | 6b |
USDA Hardiness Ref. | |
Canadian Hardiness Zone | 7 |
Canada Hardiness Ref. | |
RHS Hardiness Zone | H6 |
RHS Hardiness Ref. | |
Temperature (°C) | -21 |
Temperature (°F) | - 5 |
Height | 2 m |
Growth | Medium |
Flowering Period | April, May |
Description and Growing Information
General Description | Dark red buds open to black-red flowers forming a well rounded truss. The large leaves are bright green with a prominent yellow midrib. |
Landscape | Best suited to larger gardens with mixed larger trees to provide the dappled shade it prefers. |
Propagation | Propagate by semi-ripe cuttings in late summer, layering in autumn or grafting in late summer or late winter. |
Cultivation | Grow in moist but well-drained, leafy, humus-rich acid soil in a sheltered position in part shade. |
Pests | Vine weevil, rhododendron leafhopper, pieris lacebug, scale insects, caterpillars, aphids, powdery mildews, rhododendron petal blight, rhododendron bud blast, silver leaf and honey fungus |
Notable Specimens | National Trust Trelissick Garden, Feock, near Truro, Cornwall, United Kingdom. |
Habitat | Horticultural origin. |
Flower/Leaf Bud Description | Dark red buds. |
Leaf Description | Elliptic-lanceolate, 15 cm long, medium green above, brown indumentum below. Compact, upright habit. |
Flower Description | Campanulate, 10 cm across, dark crimson with black spots on the upper lobes. Dome-shaped trusses of 16 flowers. |