Michael Dirr Event - UMass Amherst
Dr. Michael Dirr will speak and offer several Tree Walk & Talks on Fri, April 21 and Sat, April 22. For more details and to register, go to ag.umass.edu/landscape/events/umass-earth-day-arbor-day-celebration-with-dr-michael-dirr. BOOK SIGNING to follow. Copies of his Manual of Woody Landscape Plants and Dirr’s Encyclopedia of Trees and Shrubs will be for sale.