Identify trees in any season, not just when they are in full leaf. This field-tested guide features color photos showing bark; branching patterns; fruits, flowers, or nuts; and overall appearance; as well as leaf color and shape--all chosen specifically to illustrate trees in spring, summer, winter, and fall. Accompanying text describes common locations and identifying characteristics. Created for in-the-field or at-home use, this guide includes an easy-to-use key that will help you put a name to any tree by flipping only a few pages. Covers every common tree in North America.