Photo illustration by Connie Oswald Stofko by Connie Oswald Stofko “Sustainable gardening works with nature so you don’t have to do as much work trying to control pests, diseases and soil issues,” said David Clark, CNLP. Clark, a nationally known horticulture educator, will teach the new series of horticulture classes on sustainability. Classes will be taught from 11 a.m. to 1 p.m. Saturdays starting this Saturday, Jan. 22 in the Administration Building at the Buffalo and Erie County Botanical Gardens, 2655 South…