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Taxonomy
| Clade | gymnosperm |
|---|---|
| Family | Pinaceae |
| Genus | Pseudotsuga |
| Species | menziesii |
| Common Name | Douglas-fir |
| iTree Code | PSME |
Plant Form
| Form | Tree: very large, tall |
|---|---|
| Height | 200 feet |
| Spread | 35 feet |
| Deciduous | No |
Identification Description
| Foliage | singly attached, flat needle coming to a point, generally soft | Leaf Type
 |
Needle |
|---|---|---|---|
| Needles | 1 | ||
| Bark | smooth, gray when young; thick ridges, brown/red and very thick when older | ||
| Bud | cone shaped, reddish brown, with over-lapping scales, pointed | ||
| Twig | current year, yellow-green; gray/brown in later years | ||
| Pollen Cone | male (strobili) yellow to red; female (strobili) green to deep red | ||
| Seed Cone | papery cone with smooth scale & distinct bracts emerging from scales | ||
| Fall Color | green | ||
Site Characteristics
| USDA Zones
|
pH Levels | Salt Tolerance | |||
|---|---|---|---|---|---|
| Min | 3b | Min | 5.0 | Soil | Intolerant |
| Max | 6b | Max | 7.5 | Spray | Intolerant |
| Shade Tolerance | Drought Tolerance | Allelopathy |
|---|---|---|
| Intermediate | Intolerant | No |
Species Status
| Nebraska Native | |
|---|---|
| U.S. Native |
|
| Region of Origin | United States, Canada |
| More Information | Visit External Site |