Developed by Marjorie Peronto, Extension Professor; and Theresa Guethler, Extension Master Gardener. Updated January 2021 by Marjorie Peronto; Frank Wertheim, Associate Extension Professor; and Emma Fournier, Extension Community Education Assistant. For information about UMaine Extension programs and resources, visit extension.umaine.edu. Find more of our publications and books at extension.umaine.edu/publications/. [um-iframe width=”560″ height=”315″ src=”https://www.youtube.com/embed/Da1gOgjaqaM” frameborder=”0″ allow=”accelerometer;