We have one lone very large tree in our back yard. It's a Norway Maple which towers well over our house. This one tree has given so much. It keeps the back of the house cool in the summer with much needed shade from the hot sun and in the fall when it drops it leaves gives us the best garden mulch. This one tree alone can fill over 30 large leaf bags. It is used by many birds, a couple of racoons, squirrels and chipmunks. Last weekend most of the leaves fell from the tree all at once and now we're gathering up the leaves to use as mulch, for the garden and for layering in the compost bins during the winter.