Douglas fir
Also known as: green Douglas fir; Oregon pine
A fast-growing large evergreen tree of conical habit, the bark becoming thick and rugged; leaves linear, dark green, two-ranked. Cones to 10cm long, with conspicuous exserted bracts
Scientific classification
- Species
- Douglas fir (Pseudotsuga menziesii)
- Genus
- Pseudotsuga
- Family
- Pinaceae
- Information to be completed
- Toxicity
- Conifers · Trees
- Plant type
- Higher than 12 metres
- Height
- wider than 8 metres
- Spread
- Evergreen
- Foliage
- Columnar upright
- Habit
- Spring · Summer · Autumn · Winter
- Season of interest
- Full sun
- Sunlight
- 15 – 25 °C
- Ideal temperature
Douglas fir pictures
Distribution of Douglas fir
Distribution map
- Native
- Introduced
- Cultivated
Source：WCVP v16 · Royal Botanic Gardens, Kew · CC BY 3.0 · Boundaries：WGSRPD / TDWG
Culture
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Toxicity
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Quick identification of Douglas fir
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Douglas fir care guide
- Water deeply and regularly during the first few years; established trees are drought-tolerant.
- Watering
- Full sun
- Sunlight
- 15 – 25 °C
- Ideal temperature
Watering
Water deeply and regularly during the first few years; established trees are drought-tolerant.
Fertilizing
FertilizingApply a balanced slow-release fertilizer in spring if growth is poor.
Pruning
PruningRequires little pruning. Remove competing leaders on young trees
Propagation
PropagationPropagate by seed sown fresh in containers in a cold frame in late winter
Growing
GrowingGrow in any well-drained, non-chalky soil in full sun
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Common pests and diseases
Diseases
Generally disease free
Pests
Douglas fir adelgids may occur
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