There are some good reasons to cut trees when they are small instead of letting them continue to grow. Of course this is not all trees, probably not even most trees. But in many cases, it makes sense to cut them when they are small. I cut down a Small Douglas fir tree, put it on my Woodmizer LT15 Sawmill, and see how much lumber we can get out of a small tree. In the process, I will show you several reasons to cut and mill trees when they are small.