University of Wisconsin-Madison | Botany Plant Growth Facilities

Botanical Garden

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Genus: Pseudotsuga Species: menziesii var glauca Common Name: Rocky Mountain Douglas Fir Family: Pinaceae Order: Coniferales Native: Parents from North America Habit: Tree Height: 40 to 60 feet Width: 15 to 25 feet Propagation: Stem cutting Zone: 4-6 Note: This evergreen, flat-needled conifer is suitable individually as a focal point specimen or as a group for evergreen screens. Douglas Fir is not tolerant of drought and heat. The needles are blue-green, and up to 1.5 inches long with a white color band beneath. Monitor plant for root rot and leaf cast fungi. Prefers sunny, moist, well-drained, acidic loamy soil.