Woody > Thuja > Thuja koraiensis > Thuja koraiensis
Thuja koraiensis
Korean Arborvitae
Mike's
Opinion
"
An unknown evergreen, which could become popular with time as it is a satisfying ornamental tree.
Michael Pascoe, NDP., ODH., CLT., MSc. (Plant Conservation)
"
| Family |
| Cupressaceae |
| Genus |
| Thuja |
| Species |
| koraiensis |
| Category |
| Woody |
| Type |
| Tree (evergreen) |
| Pronunciation |
| USDA Hardiness Zone |
| 2a-8b |
| Canadian Hardiness Zone |
| 2-7 (8) |
| Temperature (°C) |
| -46 |
| Temperature (°F) |
| -50 |
| Height |
| 5-13 m |
| Spread |
| 1-2 m |
Photographs
Cultivars
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Description and Growing Information
Flowering Period
| General Description |
| Pyramidal in shape, scale like foliage, scale bark, dark green in colour with white wax band on the underside. |
| Cultivation |
| The Cupressaceae family can tolerate very cold weather and are not fussy about soil types. Thuja koriensis prefers well drained soils and full sun. |
| Shape |
| This tree usually has a pyramidal shape but on occasion, when pruned, it can lay horrizontally. |
| Growth |
| Medium |
| ID Characteristic |
| Pyramidal in shape, leaves in opposite pairs in ranks of 4 scale like incurved, around 2 mm in length. Pale/white underside, fruit almond smell when crushed. Up right cones, elongated around 1 cm in length with 8 to 10 scales. |
| Pests |
| Susceptible to scale bugs and phomopsis tip blight. |
| Habitat |
| North Korea and China |
| Bark/Stem Description |
| Scale bark, light brown/reddish in colour. |
| Flower/Leaf Bud Description |
| Yellow in colour forming into a reddish brown when ripening. |
| Leaf Description |
| Scale leaves 2 to 4 mm long, bright white underside. |
| Flower Description |
| Flowers are smaller with 4-6 scales and are pollinated by the wind. |
| Fruit Description |
| 8 to 14 mm long, 4 to 5 mm broad, opening to 6 to 9 mm. Brown scales in four pairs, linear/obovate. |
| Colour Description |
| Dark green foliage with white stomatal wax bands on the underside. Darker reddish brown scaled bark. |
| Texture Description |
| Rough scales like foliage and waxy white stomatal bands. |
| Propagation |
| From seed, stratified for 7 to 10 days at approximately 0°. For soft wood cuttings, stratify in February with bottom heat and mist. |
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