Sitka spruce grows along the Coast in a narrow band. It is most common along the coastal fog-belt and river and stream flood plains. It attains its best development on the Queen Charlotte Islands. This tree is the largest of the spruces and grows up to 70 metres tall and 2 metres in diameter. While Sitka spruce grows in pure stands, it is also found common mixed with Douglas-fir, western red cedar and red alder.