Learn late-summer pruning techniques for spring-flowering shrubs and trees that bloom on last season’s growth. Learn the the best pruning methods to encourage healthy growth and a vibrant floral display. This New England Botanical Garden at Tower Hill class will take place August 12 at 6 pm. The instructors will be Hunter Blanchard and Alyson Prokop. $40 for NEBG members, $48 for nonmembers. Register at www.nebg.org