On Saturday, Jan. 9, the Polly Hill Arboretum staff will lead a guided tour, focusing on seasonal plants of interest. At this time of year, bark and tree structure stand out, along with fruits and berries. This year, due to the warm weather, the arboretum reports some flowering plants are blooming earlier than usual. The tour starts at 10 am, and runs for a little over an hour. Guests should meet at the Visitor Center and dress for the weather. Tours are free. For more information, call 508-693-9426.