* Trees and shrubs that flower in the early spring (redbud, dogwood, etc.) should be pruned immediately after flowering. Early tree bloomer's flower buds appear on new growth the following year.
* Many flowering trees are susceptible to fireblight, a bacterial disease that can be spread by pruning. These trees, including many varieties of crabapple, hawthorn, pear, mountain ash, flowering quince and pyracantha, should be pruned during the dormant season. Check with your county extension agent or urban forester for additional information.
* Trees and shrubs that flower in the summer or fall should always be pruned during the dormant season. Flower buds will form on new twigs during the next growing season and the flowers will bloom normally.

