Science · Specimen Trees
Noble Fir
A large true fir of cool, moist Pacific Northwest mountains. Its layered branches and upright cones are distinctive, but hot dry lowland sites often fail to provide an appropriate climate.
Abies procera · Montane evergreen true fir
Profile
- Habitat
- Cool montane forests of the Pacific Northwest.
- Cones
- Large upright cones with protruding bracts; cones disintegrate at maturity.
- Planting
- Set the root flare at grade and protect the expanding root zone from compaction.
- Assessment
- Confirm identity, local climate suitability and drainage before prescribing care.
Water & soil targets
- Moisture (VWC)
- Site-calibrated; varies by soil and rootstock
- Salinity tolerance
- Prefer low-salt water.
- Drought tolerance
- Low in hot settings; moderate only on suitable cool sites.
Optimal root measurement depth
8–18 in
Most absorbing tree roots live in the upper 12–18 inches, out toward the drip line. Typical guidance; confirm with a soil probe on site.
Maintain moisture with excellent aeration and avoid warm stagnant root zones; irrigation cannot fully compensate for an unsuitable hot climate.
Problems to watch
- Root rots
- Fir needle diseases
- Balsam woolly adelgid
Stress signs
- Needle browning
- Reduced shoot growth
- Top dieback
Where you'll find it
- Cool-climate specimens
- Christmas tree production
More specimen trees
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All Science profilesGeneral agronomic guidance and typical ranges; actual targets vary by site, soil, climate and season.