Habitat:
It is the most drought-resistant of all native firs and although it can
exist on poor, dry sites, it grows most vigorously in moist, well-drained,
acid soils in protected locations.
Diseases: Bark beetles often attack these trees, sometimes fatally, although needle rusts and dwarf mistletoe are the more serious diseases. Insect pests and diseases can attack the top of the tree with detrimental effects on cone production.
Distribution: Abies concolor is native to the mountainous regions of the western United States, growing at low to middle elevations on northerly-exposed ridges and slopes.
