Developed by Tori Jackson, Extension Professor of Agriculture & Natural Resources, Lynne Holland, Horticulture Professional, University of Maine Cooperative Extension, and Naomi Jacobs, Master Gardener Volunteer Reviewed by Katherine Garland, Horticultural Professional, University of Maine Cooperative Extension. Updated by Gary Fish, State Horticulturist, Maine Department of Agriculture, Conservation and Forestry For information about UMaine Extension