Western Redcedar

Thuja plicata Donn ex D. Don - Cypress family

Size

Mature Height: Up to around 150.0 feet

Planting Distance: 6.0 feet

Plant Type: Tree

Root Depth: 30 inches

Growth Form: Single Stem

Growth Rate: Slow

Features

Flower Color: Red, Purple

Conspicuous Flowers: No

Bloom Time: Mid Spring

Seasonal Growth: Spring and Summer

Evergreen: Yes

Fall Colors: No

Conditions

Shade Tolerance: Tolerant

Clay Soil Tolerance: No

Sandy Soil Tolerance: No

Drought Tolerance: Low

Flood Tolerance: None

Fire Tolerance: Low

Salt Tolerance: None

Ecosystem Interactions

Pollinators: Larval Host (Butterfly); Larval Host (Moth); Wind

Larval Species depending on Western Redcedar: Acleris variana, Anavitrinella pampinaria, Argyresthia freyella, Argyrotaenia citrana, Argyrotaenia dorsalana, Argyrotaenia niscana, Aseptis binotata, Callophrys eryphon, Campaea perlata, Caripeta divisata, Cladara limitaria, Ditula angustiorana, Ectropis crepuscularia, Eilema bicolor, Enypia griseata, Enypia packardata, Enypia venata, Epinotia subviridis, Epirrita autumnata omissa, Eupithecia annulata, Eupithecia gibsonata, Eupithecia graefii graefii, Eupithecia harrisonata, Eupithecia intricata taylorata, Eupithecia longipalpata, Eupithecia palpata, Eupithecia placidata, Eupithecia sabulosata, Eupithecia transcanadata, Eupithecia unicolor, Eupithecia usurpata, Gabriola dyari, Hydriomena irata, Hydriomena renunciata, Hypagyrtis piniata, Idia aemula, Lambdina fiscellaria lugubrosa, Lambdina fiscellaria somniaria, Lophocampa argentata, Malacosoma californica pluvialis, Melanolophia imitata, Mitoura nelsoni, Mitoura nelsoni nelsoni, Nematocampa filamentaria, Neoalcis californiaria, Nepytia phantasmaria, Nepytia umbrosaria nigrovenaria, Orgyia antiqua, Orthosia hibisci, Palthis angulalis, Panthea portlandia - group, Pero behrensaria, Pero mizon, Pero morrisonaria, Phlogophora periculosa, Protoboarmia porcelaria, Protoboarmia porcelaria indicataria, Semiothisa granitata-group, Semiothisa setonana, Spiramater lutra, Stenoporpia albescens, Synaxis pallulata, Syngrapha alias, Syngrapha selecta, Thallophaga hyperborea, Xestia mustelina

Native Range

  • USA:  Alaska, California, Idaho, Montana, Oregon, Washington
  • CAN:  Alberta, British Columbia
Regional Native Status: L48 (N), AK (N), CAN (N)

State-level native status is based on data available through Plants of the World Online. Regional Native Status comes from the USDA Plants Database. For more detailed native status information, please refer to BONAP.