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Abies lasiocarpa (Hook.) Nutt.
USDA Symbol: abla
USDA Native Status: Native to U.S.
At maturity this is a small, 30-50 ft., spire-like evergreen with stiff, horizontal limbs branched to the ground. Pale, bluish-green needles and grayish or chalk-white bark are distinguishing characteristics. Its smooth, upright cones are brilliant purple until maturity. The most widespread western true fir, with dense, long-pointed, spirelike crown and rows of horizontal branches reaching nearly to base; shrubby at timberline.
The spires of Subalpine Fir add beauty to the Rocky Mountain peaks. When weighted down to the ground with snow, the lowest branches sometimes take root, forming new shoots. The bark of this and related firs is browsed by deer, elk, bighorn sheep, and moose; the leaves are eaten by grouse, and the seeds are consumed by songbirds and mammals. The scientific name, meaning hairy-fruited, refers to the cones. Corkbark Fir (var. arizonica (Merriam) Lemm.), a variety from Arizona to Colorado, has thin, whitish, corky bark. Some authorities consider the variety lasiocarpa ((Hook.) Nutt.) as a separate species, A. bifolia.
Plant CharacteristicsDuration: Perennial Habit: Tree Leaf Retention: Evergreen Leaf Complexity: Simple Leaf Shape:
Linear Breeding System:
, Monoecious Fruit Type:
Fruit: Size Class:
Bloom InformationBloom Time: Apr , May
AK , AZ , CA , CO , ID , MT , NM , NV , OR , UT , WA , WY Canada: AB
, YT Native Distribution:
Yukon & s. AK, s. to NM & AZ Native Habitat:
Mts. above 8000 ft. USDA Native Status: L48(N), AK(N), CAN(N)
Growing ConditionsWater Use:
Medium Light Requirement:
Sun , Part Shade , Shade Soil Moisture:
Moist Soil pH:
Acidic (pH<6.8) CaCO3 Tolerance:
Low Soil Description:
Moist to dry, gravelly or sandy loams. Conditions Comments:
Subalpine fir is disease and insect resistant. It fir has been extensively collected in the wild at great detriment to the species and its native
habitat. Verify that commercially available plants are nursery grown. Aibes lasiocarpa var. arizonica is considered more ornamental but less hardy than the species.
BenefitUse Wildlife: Provides valuable cover for birds and small mammals.
Fragrant Foliage: yes
This species should be sown from seed. It is a slow process. In nature, Abies seeds often germinate on melting snow fields. Seed Collection:
Optimum seed bearing age is 150-200 years. A good seed crop is produced every second year. Cones can be harvested in avalanche areas or from squirrel caches. Cone scales bear two seeds at the base. Mature seed has a large wing
and is ovoid to oblong. Seeds can be damaged easily. Seeds store best in a dry, cool environment. Seed Treatment:
Stratification for 3 months at 30 degrees improves germination. Commercially Avail:
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Native Seed Network
- Corvallis, OR
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Record Modified: 2007-01-01
Research By: TWC Staff