Bittersweet is an invasive vine that wraps itself around trees and kills them  is easiest to cut in the winter. Wear old clothes and layers, heavy cotton or wool is best, nylon will snag on branches. If you have cold hands bring liners for under leather gloves. Meet at Valley Gates Parking Lot midway along the main park road. RSVP and Questions? www.franklinparkcoalition.org  or 617-442-4141.