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Thuja occidentalis

Common Name(s):
American arborvitae, Eastern arborvitae
Cultivar(s):
'Aurea Nana', 'Hetz's Winter Green', 'Nigra', 'Pumilia Sudworth', 'Smart Guard', 'Spudwellii'
Category:
Trees
Comment:

A slender evergreen tree native to eastern North America in the Cupressaceae family.  It is a low maintenance plant that tolerates clay soil, wet sites, black walnut and air pollution.  Attractive red-brown bark exfoliates on mature branches and trunks.

Insects, Diseases, and Other Plant Problems:  No serious insect or disease problems. Leaf miner may damage leaf tips. Bagworms, mealybug, scales and spider mites are occasional visitors.  Canker can occasionaly be a problem. Does not preform well in overly shady, dry, or windy sites.   Susceptible to damage/stem breakage in winter from ice and snow accumulations. Foliage can become winter burned (yellow-brown) in dry, exposed sites.

Height:
40-60 ft.
Flower:
Conifer, non-flowering
Zones:
2 to 7
Habit:
Evergreen
Site:
Full sun to partial shade in the afternoon in hot summer climates; wide range of soil types including tolerating wet sites. Does not tolerate dry sites. Grows best in moist, neutral to alkaline, well-drained loams. Avoid full shade or foliage will thin out dramatically and avoid exposed, windy sites.
Texture:
Fine to medium
Form:
Stiff, narrow to broad pyramidal form
Width:
10-15 ft.
Growth Rate:
Rapid
Leaf:
Rich green summer color; scale-like, aromatic, yellow-green to green foliage appears in flattened sprays. Often turns yellow in winter.
Tags:
air pollution, clay, wet sites, conical, low maintenance, winter interest, wet soil, fragrant, fragrant foliage, black walnut, wet, bark, evergreen

NCCES plant id: 2217

Thuja occidentalis Cone
Thuja occidentalis Needles
Thuja occidentalis Form
F.D. Richards, CC-BY-SA-2.0