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Douglas Fir

doug fir tree

Douglas fir

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Scientific Name: Pseudotsuga menziesii

Under Power Lines:
No

Street Tree Planting:
Yes—but only on planting strips 12 feet or wider. If planting a street tree, you must be approved for a permit.

Description:
The classic Pacific Northwest native evergreen conifer. The Douglas fir is known for its noble, upright growth and lush needles, which form a beautiful downward sweeping canopy. The tree needs plenty of room to grow upward, making it an excellent yard tree.

Mature Height:
60 feet

Mature Spread:
15 feet

Leaves:
Short, deep green needles grow around all sides of the twigs for a fuzzy, full appearance.  Sticky, red buds at twig ends harbor pale green new growth and remain after buds burst.

Flowers:
Bright red new cones are upright, soft and frilly, ageing to pendulous brown cones.

Fruit:
Mature cones are a soft brown color and hang downward from branches, sporting three-pronged seeds protruding from scales.

Cultural Notes:
Prefers moist, rich and loamy soils and wet conditions. Will fail in dry or drought prone areas. Needs full to partial sun and plenty of room to grow.

Potential Problems:
Generally very resistant to disease; can be prone to Douglas fir bark beetles, cankers, leaf and twig blights.

Minimum Planting Distances:

  • 3 ½ feet back from the face of the curb
  • 5 feet from underground utility lines
  • 10 feet from power poles
  • 7 ½ feet from driveways (10 feet recommended)
  • 20 feet from street lights and other existing trees
  • 30 feet from street intersections

More Information:

 

doug fir tree

Douglas fir cone

 

 

 

 

 

 

 

 

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