Details of...
Scientific Name: Pseudotsuga menziesii
Pronunciation: soo-doe-TSOO-guh MEN-zeez-ee-eye
Common Name: Douglas fir
Family Name: Pinaceae
Plant Type: Conifer
Key ID Features: Leaves soft, needle-like, much shorter and flatter than pine trees; cones pendulous with 3-pointed bracts tucked under cone scales, look like tail and back legs of a mouse hiding under scale; bark very thick, deeply fissured. Seedling ID: 5-9 cotyledons, 1.2-2 cm long, no teeth.
Course(s): AARB 1012, HORT 1155, Level 4 Apprenticeship

Habit: Horizontal, Upright
Form: Pyramidal - widely
Texture: Medium
Mature Size:
Height:> 30m
Spread:10 - 15m
Growth Rate:Moderate
Origin: B.C. east of Cascades, B.C. west of Cascades, U.S. - northwest, U.S. - southwest
Hardiness Rating: Zone 5: (-29 to -23 C)
Exposure: Full sun
Soil/ Growing Medium: Acidic, Well-drained
Water Use: Moderate
Landscape Uses: Forestry, Native planting, Specimen plant, Wind break, Woodland margin
Additional Info: Google
Douglas fir
Leaf Morphology:
Form: Needle-like
Arrangement: Alternate, Spiraled
Texture/ Venation: Soft flexible
Surfaces: Glabrous
Colour in Fall: Green
Leaf(let) Terms:
Shapes: Acicular
Apices: Acute, Rounded
Bases: Cuneate
Margins: Entire
Additional Info: 2-3 cm long, sharp point; soft, flexible, appear in 2 rows, spirally arranged, flat, groove above.

Inflorescence Type: n/a (male cone)
Flower Morphology:Monoecious plant
Colour (petals): Male Cone, Yellow, Brown
Flower Time at Peak: Apr, May

Fruit Type: Cone (winged seeds)
Fruit Colour: Brown
Fruiting Time: Sep, Oct

Bark Morphology: Deeply fissured, Corky, Single stem trunk
Bark or Stem Colour: Grey, Brown
Organ Modifications: Ectomycorrhizae

Propagation: Seed
Plant Care:
Pest Susceptibility: Drought resistant, Dieback, Nematodes, Scale insects, Diptera - true flies, Canker or sap rot, Rust, Aphids or adelgids, Caterpillar or cutworm, Blight or needle cast
(JPL) Juglans PLanting
(TFL) Turf Field Lab
(TFLW) Turf Field Lab West
(WDH) Wark-Dumais House : 213, 215
(WLG) WoodLand Garden
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