Every Road Trips Gardener knows that some plants are more useful than others.

Amy Stewart knows about plants that create the world’s great drinks. She’s the author of “The Drunken Botanist” and she’s going to talk about her research (and sign copies of her book) at a lecture followed by a reception beginning at 6 p.m. October 16, 2013, in the Volmer Center of Clyburn Arboretum at the H.P. Rawlings Conservatory & Botanic Gardens, 3100 Swann Drive, Baltimore, Maryland.

Who knew that horticulture was such an intoxicating subject? In her fourth New York Times bestseller, Stewart explores the odd, unusual and surprisingly common plants that have produced the world’s greatest spirits. “The Drunken Botanist” uncovers the enlightening botanical history and the fascinating science and chemistry of over 150 herbs, flowers, trees, fruits — and even a few fungi.

Tickets are $40. All proceeds directly benefit the Rawlings Conservatory.