SelecTree: Tree Detail

DOUGLAS-FIR
Pseudotsuga menziesii

Pseudotsuga menziesii Pseudotsuga menziesii Pseudotsuga menziesii Pseudotsuga menziesii Pseudotsuga menziesii Pseudotsuga menziesii Pseudotsuga menziesii Pseudotsuga menziesii Pseudotsuga menziesii Pseudotsuga menziesii Pseudotsuga menziesii Pseudotsuga menziesii

Photo Locations: Rochester, NY, Swanton Pacific Ranch - Davenport, CA, Matthews Creek, CA, Hoyt Arboretum - Portland, OR and Santa Barbara Botanic Garden - Santa Barbara, CA

General Notes

Resistant to oak root fungus. A natural varietal form is Pseudotsuga menziesii glauca with blue-green needles. Pitch Canker note: Naturally infected trees have been observed only in planted stands, and not in native forests.

Has fragrant Leaf.

Native to Western North America.

A Pseudotsuga menziesii in Prairie Creek Redwoods State Park is registered as a California Big Tree. It measures 244 feet high, with a trunk circumference of 320 inches and a crown spread of 92 feet.

Family: Pinaceae

Tree Characteristics

Erect and requires ample growing space.

Conical Shape.

Has Evergreen foliage.

Height: 80 - 160 feet.

Width: 20 - 30 feet.

Growth Rate: 24 Inches per Year.

Longevity Greater than 150 years.

Leaves Needle, Blue Green or Dark Green, No Change, Evergreen.

Flowers Inconspicuous. Flowers in Spring. Has separate male and female flowers on the same tree (monoecious).

Brown Cone, Very Large (Over 3.00 inches), fruiting in Winter or Summer.

Bark Red Brown, Fissured.

Shading Capacity Rated as Moderate to Dense in Leaf.

Litter Issue is Dry Fruit.

Tree Site Conditions & Constraints

Sunset Zones 1 - 10 and 14 - 17.

USDA Hardiness Zones 5 - 7.

Exposure Full Sun to Partial Shade.

Moist to Dry Soil.

Clay, Loam or Sand Texture.

Highly Acidic to Slightly Alkaline Soil pH.

Seaside Tolerance is Good in Mild Zone.

Pests & Disease Information

Susceptible to Beetle Borers, Western Spruce Budworm, Douglas Fir Beetle, Black Pineleaf Scale, Spruce Spider Mite and Douglas-fir Tussock Moth, Sudden Oak Death, Phytophthora, Root Rot, Armillaria, Laminated Root Rot, Red Ring Rot, Mistletoe and Pitch Canker.

Health, Safety & Environmental Concerns

Branch Strength Rated as Strong.

Root Damage Potential Rated as Moderate.

Allergy Health Hazard.

Biogenic Emissions considered Moderate.

Fire Resistance is Unfavorable.

Attracts Birds and Squirrels.

Special Uses & Values

Hedged.

Cite this tree:
SelecTree. "Pseudotsuga menziesii Tree Record." 1995-2018. Sep 21, 2018.
< https://selectree.calpoly.edu/tree-detail/pseudotsuga-menziesii >

This tree is not part of the SelecTree Nursery Connection. If you would like to see this tree listed, or know of a nursery that sells it, please contact us at ufei@calpoly.edu.