Woody > Rhododendron > Rhododendron impeditum > Rhododendron impeditum 'J. C. Williams'
Rhododendron impeditum
'J. C. Williams'
Mrs J. C. Williams Rhododendron
| Family |
| Ericaceae |
| Genus |
| Rhododendron |
| Species |
| impeditum |
| Cultivar |
| 'J. C. Williams' |
| Category |
| Woody |
| Type |
| Shrub (evergreen) |
| USDA Hardiness Zone |
| 6b - 7a |
| Canadian Hardiness Zone |
| 7 |
| RHS Hardiness Zone |
| H6 |
| Temperature (°C) |
| -32 |
| Temperature (°F) |
| -25 |
Photographs
Description and Growing Information
Flowering Period
| Landscape |
| Cultivation |
| Grow in moist but well-drained, leafy, humus-rich acid soil in part shade with shelter. |
| Shape |
| Sprawling to mounding. |
| Pests |
| Potential diseases include powdery mildews, rhododendron petal blight, rhododendron bud blast, silver leaf and honey fungus. Potential insects include spider mites, aphids, scale, borers, leafhoppers, caterpillars, tent caterpillars and Japanese beetles. |
| Bark/Stem Description |
| Dark brown-grey, mild fissures can be found on older growth. |
| Leaf Description |
| Narrow leaves to 22 cm long. |
| Flower Description |
| Wavy-edged flowers borne in compact trusses, white with distinct red-brown spotting on the upper lobe, opening from pink buds early to mid- spring. |
| Notable Specimens |
| Caerhays Castle, Goran, Cornwall, United Kingdom. |
| Propagation |
| Propagate by semi-ripe cuttings in late summer, layering in autumn or grafting in late summer or late winter |
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