Rhododendron keysii
Botanical Information
Family | Ericaceae |
Genus | Rhododendron |
Species | keysii |
Category | Woody |
Type | Shrub (evergreen) |
Origin | Native to northeastern India, Bhutan, Sikkim, and southern Tibet. |
Details
USDA Hardiness Zone | 6b - 7a |
USDA Hardiness Ref. | |
Canadian Hardiness Zone | 8 |
Canada Hardiness Ref. | |
RHS Hardiness Zone | H6 |
RHS Hardiness Ref. | |
Temperature (°C) | -32 |
Temperature (°F) | -25 |
Height | 1 – 4 m |
Flowering Period | April, May |
Description and Growing Information
Shape | Sprawling to mounding. |
Propagation | Propagate by semi-ripe cuttings in late summer, layering in autumn or grafting in late summer or late winter. |
Cultivation | Grow best in moist, fertile, well-drained loams in full sun to part shade. Best flowering occurs in full sun. |
Pests | Vine weevils, scale insects, honey fungus, powdery mildew, and bud blast. |
Notable Specimens | Caerhays Castle, Goran, Cornwall, United Kingdom. |
Bark/Stem Description | Dark brown-grey, mild fissures can be found on older growth. |
Leaf Description | Narrow dark green leaves that are lanceolate-elliptic or lanceolate-oblong in shape, and typically 4 –8 × 1 –3 cm in size. |
Flower Description | Narrow tubular in shape and orange to reddish in colour with yellow or green lobes. |