Thuja orientalis
Oriental Arborvitae
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Oriental Arborvitae (Thuja orientalis) - Description
Platycladus is a distinct genus of evergreen coniferous tree in the cypress family Cupressaceae, containing only one species, Platycladus orientalis, also known as Chinese arborvitae, biota or oriental thuja. It is endemic to northwestern China. It is also now naturalised as an introduced species elsewhere in Asia: eastward to Korea and Japan; southward to northern India; and westward to northern Iran.
Oriental Arborvitae (Thuja orientalis) - Blooming
Male and female cones are borne on the same tree. Males are usually ovoid, and smaller than the females, which are erect.
Oriental Arborvitae (Thuja orientalis) - Growth
Monoecious, evergreen, coniferous trees. Thujas do well in summer shade in areas with hot summers. Height varies depending on variety. One species will grow to approx. 60 ft. Most species work well as hedges when grown as shrubs, such as T. occidentalis, which is small and rounded in stature. Thuja makes a nice specimen tree. Dwarf plants are nice additions to a rock garden.
Oriental Arborvitae (Thuja orientalis) - Planting
Sow seeds in late winter in containers in a cold frame (for protection from winter moisture and to ensure hardiness). Can also propagate from semi-ripe cuttings in late summer.
Oriental Arborvitae (Thuja orientalis) - Pest
Bark beetle, caterpillars, mites, scale insects, and weevils are common. Other frequent issues include twig dieback, mushroom root rot, needle blights, butt rot, and gray mold.
Oriental Arborvitae (Thuja orientalis) - Interesting facts
Thuja is endemic to the forests of Eastern Asia and North America. Foliage can irritate the skin upon contact.
Oriental Arborvitae (Thuja orientalis) - Soil and irrigation
Thujas will take little to much irrigation. Does best in deep, well-draining soil that is kept moist.









