SWANVILLE, Maine—University of Maine Cooperative Extension will host a workshop on the principles of pruning apple trees on Wednesday, March 25 from 10 a.m.–1 p.m. at the Waldo County Gardens, 685 Swan Lake Ave., Swanville.  UMaine Extension Tree Fruit Specialist Renae Moran will demonstrate different techniques that can be employed to shape trees and contain read more UMaine Extension to host apple tree pruning and orchard management workshop