The Polly Hill Arboretum on State Road in West Tisbury is looking forward to a new season and will open its Visitor Center on May 28 with a new event, Spring into Summer: A Celebration of Plants.  This celebration will kick off the summer season with the annual Memorial Day plant sale, special talks and tours, a book sale, tree raffle, garden talks,  and much more.  For more information, log on to www.pollyhillarboretum.org, or follow them on Facebook.