by Connie Oswald Stofko It was her love of plants that led Donna Ludwig of Hamburg to become a docent at the Buffalo and Erie County Botanical Gardens, 2655 South Park Ave., Buffalo. “It was just a place that called to me,” she said. “I have a chance to give back and there’s always something new to learn.” Docent training classes will be held 9 a.m. – 1 p.m. Thursdays Sept. 10 – Nov. 5, excluding holidays, at the Botanical Gardens….