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Scientific Name: Platycladus orientalis (L.) Franco
Synonym: Thuja orientalis
"Tuya, oriental arborvitae, Thuja orientalis L.", 20329 U.S.D.A. Forest Service, courtesy of Hunt Institute
Recommended Temperature Zone:|
sunset: All zones
Frost Tolerance: Hardy to 10°F (-12°C)
Heat Tolerance: Better with afternoon shade, avoid reflected heat, ample water during the summer in the low-deserts
Sun Exposure: Full sun to light shade
Origin: Probably China
Growth Habits: Evergreen tree or large shrub, slow growing, 3 to 25 feet tall (0.9-7.5 m), 2 to 12 feet (0.6-3.6 m) wide depending on the variety; small scale-like mature leaves, 0.04 inch long (1 mm), scented when bruised, arranged in vertical planes; juvenile leaves are more needle-like
Watering Needs: Regular water, pretty adaptable, but doesn't like boggy sites
Propagation: Seeds, cuttings
'Nana Berkman' - golden-tinted foliage, 4 feet tall (1.2 m).
'Aureus Nanus' - golden-tinted foliage, up to 10 feet tall (3 m) generally shorter.
'Baker' - dense, conical, up to 8 feet tall (2.4 m).
'Juniperoides' - blue gray, up to 3 feet tall (90 cm).
'Elegantissima' - up to 12-15 feet (3.6-4.5 m).
Prune and fertilize in late winter.
The Oriental arborvitae is sensitive to spider mite.
Monoecious, the female cones are woody and bluish when mature.
The seeds need to be stratified in a moist medium, at 40°F (4°C) during 2 months. Hardwood or softwood cuttings are relatively easy at any time of the year.
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