American Arborvite (Thuja occidentalis)

American Arborvitae is a dense, evergreen conifer native to eastern North America. Known for its soft, scale-like foliage and naturally pyramidal shape, it is widely used in landscaping for hedges, privacy screens, and windbreaks. Its foliage remains green year-round, though it may bronze slightly in winter. This long-lived tree is adaptable to a variety of soil types and is valued for its low maintenance and wildlife-friendly nature.

Category

Sun Needs:

  • Full sun to partial shade
  • Best form and density in full sun
  • Tolerates some shade but may become sparse

Bloom Time:

  • Spring (inconspicuous flowers)
  • Small, oblong cones mature in summer
Size:

Height: 20 to 40 feet (some cultivars remain much smaller)
Width: 10 to 15 feet

Attributes:
  • Dense, pyramidal to conical form
  • Soft, scale-like green foliage
  • Reddish-brown bark that peels in strips
  • Provides shelter and nesting for birds
  • Tolerates clay soil, wet sites, and urban pollution
  • Native to northeastern U.S. and southeastern Canada
Care Tips:
  • Plant in moist, well-drained, neutral to alkaline soil
  • Water regularly during establishment; prefers consistent moisture
  • Mulch to retain soil moisture and protect roots
  • Prune in early spring to shape or control size
  • Protect from heavy snow and ice accumulation
Pest Watch:
  • Monitor for deer browsing, bagworms, spider mites, and leaf miners

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