Three gardening classes will be held from 7 to 8:30 p.m. Tuesdays at Cornell Cooperative Extension, 21 South Grove Street, East Aurora. The cost is $15 per class or all three classes for $40. Send a check made out to MG of Erie County to CUCE Erie County, ATTN: Carol Ann Harlos, 21 South Grove St., East Aurora NY 14052. The classes are: Sept. 10: Lyn Chimera will speak on “Why Native Plants?” Sept. 17: Carol Ann Harlos will speak…