Rocky Mountain Douglas-Fir, Colorado Douglas Fir, Blue Douglas Fir

Pseudotsugamenziesii var. glauca

Family
Pinaceae (py-NAY-see-ee)
Genus
Pseudotsuga (SOO-doh SOO-guh)
Synonym
Sun Exposure
Sun to Partial Shade
Foliage
Grown for foliage
Evergreen
Height
over 40 ft. (12 m)
Spacing
20-30 ft. (6-9 m)
Hardiness
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
Danger
N/A
Bloom Color
Inconspicuous/none
Bloom Time
Late Winter/Early Spring
Mid Spring
Other Details
Category
Trees
Conifers
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
Seed Collecting
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Prescott, Arizona

Pinon Hills, California

Rehoboth Beach, Delaware

Aurora, Illinois

Champaign, Illinois

Iowa City, Iowa

Laurel, Maryland

Ithaca, New York

Downingtown, Pennsylvania

Ogden, Utah

Appleton, Wisconsin

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Featured Videos

Gardener's Notes:

4
positives
0
neutral
0
negative
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R
Downingtown, PA | January 2014 | positive

This Rocky Mountain Douglasfir is commonly sold at most nurseries in the Midwest and Northeastern US. It is a reliable tree that adapts w...Read More

L
Kamloops, BC (Zone 5a) | August 2011 | positive

Very majestic trees. They tolerate hot dry summers and cold winters well. They are easy to transplant too. I transplanted a few a couple ...Read More

J
Pinon Hills, CA (Zone 8a) | March 2010 | positive

I have 5 Douglas firs on my property. They are about 1 foot in height. They seem to be thriving up here in the High Desert (4,000ft).

L
Ithaca, NY (Zone 5b) | October 2004 | positive

We purchased a 6' Douglas Fir as a live Christmas tree in 1999 and planted it directly after Christmas at the front of our yard in moist,...Read More

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