How to Manage Pests

Pests in Gardens and Landscapes

Douglas fir—Pseudotsuga menziesii
Family Pinaceae (Pine family)

Plant identification

Douglas fir is a coniferous evergreen tree. In dry conditions, the needles tend to be closely spaced; in moist soils trees are thin. They have dense, green to very blue needles, and in native conditions, can grow 70 to 250 feet tall.

Optimum conditions for growth

Trees grow best in full sun and well-drained soils. They require little water once established.

Cones of Douglas fir
Branch and cones of Douglas fir

Pests and disorders of Pseudotsuga menziesii



Environmental disorders



Statewide IPM Program, Agriculture and Natural Resources, University of California
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