Common in moist forests in stream bottoms, valleys, and Lower Mountain slopes, preferably on N-facing slopes, on a variety of soil types, 0-1500 meters. Grand fir sometimes grows in pure stands but is much more common in mixed coniferous and hardwood forests. It is very shade tolerant, especially when young, although growth is slower in dense shade. It is a dominant climax species in some habitat types and a long-lived seral species in other types.
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