The Douglas fir can live to be 500 years old and is growing in different habitats in southern British Columbia. There are two different varieties which can reach different heights, the Interior Douglas Fir and the Coastal Douglas Fir. The Interior Douglas Fir can grow up to 40 m in height and the Coastal Douglas Fir can be grow up to 85 m. They both grow in uneven age stands which makes them ideal for select logging for forest management. The bark of the Douglas fir is especially thick, protecting them from most fires and their seedlings start to grow fast after a fire. Both types of Douglas Fir and the Interior Douglas-fir zones can be found in the Chilcotin Ark.