Rhododendron > Rhododendron protistum > Rhododendron protistum
Rhododendron protistum
Big Tree Rhododendron
Origin: South-west Yunnan Province, China.
Mike's
Opinion
"
A splendid sight when in full bloom.
Michael Pascoe, NDP., ODH., CLT., MSc. (Plant Conservation)
"
| Family |
| Ericaceae |
| Genus |
| Rhododendron |
| Species |
| protistum |
| Type |
| Tree (evergreen), Shrub (evergreen) |
| USDA Hardiness Zone |
| 8 - 10 |
| Canadian Hardiness Zone |
| Requires cold season protection under glass. |
| RHS Hardiness Zone |
| H5 - H2 |
| Temperature (°C) |
| -15 – 5 |
| Height |
| 5 – 10 m (In some cases up to 25 meters tall) |
Photographs
Cultivars
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Description and Growing Information
Flowering Period
| General Description |
| One of the largest of all rhododendrons, developing to a very large, rounded shape, growing in some cases up to 25 meters tall. |
| Landscape |
| Best suited to larger gardens with mixed larger trees to provide the dappled shade it prefers. |
| Cultivation |
| Grow in high organic, well-drained, acidic soils in full sun to partial shade. Mulch well to conserve moisture. |
| Shape |
| Mounding to round. |
| Growth |
| Fast |
| Pests |
| May be prone to vine weevil, rhododendron leafhopper, pieris lacebug, scale insects, caterpillars, aphids, powdery mildews, rhododendron petal blight, rhododendron bud blast, silver leaf and honey fungus |
| Leaf Description |
| Leathery leaves which are enormous, sometimes as large as 56 x 25 cm. |
| Flower Description |
| Large trusses of cream, purple or rose pink flowers in early springtime. |
| Texture Description |
| Smooth leaves with delicate purple or rose pink spring flowers. |
| Notable Specimens |
| National Trust Trelissick Garden, Feock, near Truro, Cornwall, United Kingdom. |
| Propagation |
| Propagate by seed when ripe, or semi-ripe cuttings in late summer, layering in autumn or grafting in late summer or late winter. |
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