Join director Tim Boland at Polly Hill Arboretum in West Tisbury on Saturday, Feb. 22, for a survey of the natural history, cultivation, and diversity of witch hazel. The event starts at 10 am and goes till 12:30 pm, and features some of the most unique and beautiful witch-hazels, which mark the beginning of springtime. Admission is $25 for Polly Hill members, and $40 for nonmembers. Pre-register by calling 508-693-9426.