Classes will be 100% virtual in 2022. UMass Extension’s Green School is a comprehensive 22-day certificate short course for horticultural professionals who wish to gain an understanding of economically feasible and environmentally responsible plant and land care practices and the relation of those practices to the protection of the environment. Designed for landscapers, lawn care specialists, nursery operators, sports field managers, public and private grounds managers, arborists and others in the green industry. Experienced professionals as well as those entering the field will benefit from this course. Students learn about sensible and sustainable methods of plant and land care as well as responsible nutrient and pest management.