(MD) (Montgomery Parks) Join Weed Warrior Supervisors Greg and Kathryn for a non-native, invasive plant removal workday in Sligo Creek Stream Valley Unit 4 (between Forest Glen Road and University Blvd in Silver Spring). More details, including the exact meeting location, will be emailed to all pre-registrants. We will focus on non-native, invasive vines and shrubs, including porcelainberry (Ampelopsis glandulosa ...