Oriental arborvitae


Scientific Name: Platycladus orientalis (L.) Franco
Synonym: Thuja orientalis
Family: Cupressaceae
Oriental arborvitae(Platycladus orientalis)
"Tuya, oriental arborvitae, Thuja orientalis L.", 20329 U.S.D.A. Forest Service, courtesy of Hunt Institute
Recommended Temperature Zone:
Sunset®: All zones
USDA: 8-10

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

Propagation: Cutting or occasionally seed, layering

  • by hardwood stem tip cuttings, in spring. Apply IBA Quick Dip 5000 PPM. Use intermittent mist. Root in 8-12 weeks. Wound cuttings..
  • by layers.
  • by seeds, in spring. Germinates at 68 degrees F. The seeds can be harvested in early autumn. The seeds need 40F for 2mo.. The usual germination temperature is 68 degrees F.

Oriental arborvitae(Platycladus orientalis)

Some varities:
'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).

Fruiting Habits:
Monoecious, the female cones are woody and bluish when mature.

Culture:
Prune and fertilize in late winter.
The Oriental arborvitae is sensitive to spider mite.

Propagation:
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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