The Blue Hills Reservation is the largest preserved natural area in eastern Massachusetts. It has quite a few spots that are rich in ferns. Join the New England Wild Flower Society and instructors Don Lubin and Raymond Abair on Saturday, September 26 at 11 am. They plan toÂ travel a new route and see more than a dozen fern species, including dramatic large displays of Virginia chain fern, ostrich fern (below), and Christmas ferns. Wear long pants for poison ivy and bring a lunch and hand lens.Â Participants limited to 15, fee $32 for members of NEWFS, $36 for nonmembers.Â To register, call 508-877-7630, or log on to www.newfs.org.