Figure 1. It may be winter, but these beech trees at Knox State Park in East Aurora, New York still have leaves on them. This is called marcescence.

Trees with two or more dominant leaders develop structurally weak branch angles that threaten to split under the weight of the canopy. Corrective pruning should be done to encourage a single leader.

Deciduous trees, also known as broadleaves, have leaves that are flat and thin, and they shed every year. To properly identify deciduous trees, you'll have to examine their leaf structure. The two ...