(MD) (Montgomery Parks) Join Weed Warrior Supervisor Celia for a non-native, invasive plant removal workday in Little Falls Stream Valley. We will meet in the park’s parking lot. We will focus on non-native, invasive vines, especially English ivy (Hedera helix) and porcelainberry (Ampelopsis glandulosa var. brevipedunculata) that are climbing on mature trees.  Native Virginia creeper and poison ivy are also present and beneficial, ...