Late February and March are good times to trim trees and shrubs. If the limb is larger than 2 inches in diameter, or heavily weighted, use the three-step method for removing branches. Make the first cut on the underside of the limb about 6 inches away from the trunk, cutting about one-third of the way through the limb. On the top side, cut through the limb 3 to 6 inches beyond the first cut. Remember when pruning, to remove dead or diseased branched first, and then take out any rubbing or crossed branches. Prune to maintain a natural form unless formality is appropriate for the design.