September 21
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Plant Species of the genus Thuja

Information about this genus
Name: Thuja
Cultivation: CULTIVATION: Young trees do well in full sun in deep, moist, well-drained soil, but need shelter from cold drying winds. They will survive boggy areas that are too wet for other conifers. Propagate by sowing seed in winter in an area protected from frosts, or by rooting half-hardened cuttings in late summer.
Description: This genus consists of 5 coniferous evergreen trees within the Cupressaceae family. Their natural habitat is North America and East Asia, in high rainfall woodland or damp, cold, coastal and lowland plains. The bark is reddish brown and comes off in long vertical strips on mature trees. The leaflets are flattened and scale-like. Solitary male cones grow on the end of branchlets and the solitary female cones, with 6 to 12 overlapping scales, grow lower down. These are important timber trees. Thuja occidentalis has soft fragrant wood mainly used for railway sleepers, fencing and medicinal oil. T. plicata?s timber is used for shingles and boats, as the wood is weather resistant. Although the sawdust can aggravate asthma, these trees are often used for hedging and greenery for floristry. The aromatic foliage can cause skin allergies.

Specie Vernacular Zone
occidentalis 2?10
Thuja koraiensis 5?9
Thuja plicata 5?10
Thuja standishii 6?9



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