Western Arborvitae, Giant Arborvitae (Thuja plicata)-Hort Answers - University of Illinois Extension
University of Illinois Extension

University of Illinois Extension

Hort Answers

Tree

Western Arborvitae, Giant Arborvitae
Thuja plicata

Western Arborvitae
Western Arborvitae
 
Features
Evergreen needles. 
 
Culture
Full sun to partial shade; moist, well drained soils, but tolerates wet soils; tolerant of alkaline soils. 
 
Cultivars
 
 
Mature Height
50-70 Feet
 
Size
Large
 
 
Mature Form
Pyramidal 
 
Native To:
United States 
 
USDA Hardiness Zone
5 - 7 
 
Soil Conditions
Moist, Well-Drained
Wet
 
 
Tolerance
Alkaline Soil
Wet Sites
 
 
Exposure/Light Requirements
Full Sun
Partial Sun/Shade
 
 
Uses
Screen
Specimen
 
 
Foliage Color
Green
 
 
Fall Foliage Color
Green
 
 
Pests and Problems

Environmental Damage

Fungal Disease

Insect Damage


Additional pests and problems that may affect this plant:

Prone to damage from snow and ice.
 
Additional Notes
Less likely to be browsed by deer than other arborvitae.

 

 
Related Resources
Home, Yard & Garden Pest Guide
Illinois Commercial Landscape and Turfgrass Pest Management Handbook
U of IL - Distance Diagnosis through Digital Imaging
U of IL - Plant Clinic