In her workshop and slide show, “Container Gardening – Lots of Pots,” Coastal Maine Botanical Gardens horticulturist Diane Walden will show effective combinations, designs, and planting tips. The program from 9:30 a.m. to 12:30 p.m. at the Gardens, off Barters Island Road in Boothbay, is $35 for members, $42 for nonmembers. Sign up at www.mainegardens.org or 207-633-4333, ext. 101.