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Douglas Fir

Pseudotsuga menziesii, Pinaceae

Zones
4–6
Layer
Canopy
Lifespan
Perennial
Growth
Fast

Guild Roles

Shade ProviderWindbreak

Growing Conditions

Sun

Full Sun (optimal)

Water

Moderate

Soil pH

5 – 6.5

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Western Red CedarThuja plicata
Beneficial Insect HabitatNutrient Accumulation
European HornbeamCarpinus betulus
Wind ProtectionBeneficial Insect Habitat
Coast RedwoodSequoia sempervirens
Beneficial Insect HabitatNutrient Accumulation

Antagonistic Plants

European LarchLarix decidua

Both large conifers compete intensively for light and water resources when planted too closely

American BeechFagus grandifolia

Douglas Fir can inhibit hardwood establishment through allelopathic compounds and light competition

Uses

Functions

Timber

Common Questions

What zones does Douglas Fir grow in?

Douglas Fir grows in USDA hardiness zones 4 through 6.

What are good companion plants for Douglas Fir?

Good companions for Douglas Fir include Western Red Cedar, European Hornbeam, Coast Redwood.

Design guilds with Douglas Fir and see companion relationships visually.

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