Overwhelmed with an overgrown garden? Overwhelmed with an overgrown garden? Discover how different types of pruning (thinning) techniques will restore your ornamental trees and shrubs as well as create solutions for an overgrown or overplanted garden. Plant Amnesty Founder & Author, Cass Turnbull, will alert gardeners to crimes against nature being committed in their own back yards with bad pruning practices. This fun and entertaining class offers a broad range of pruning information to home gardeners.