(MD) (Montgomery Parks) Save the trees and the Cabin John Stream Valley ecosystem . Join Weed Warrior Supervisor Yvonne and Locust Grove Nature Center Naturalists for a non-native, invasive plant removal workday in Cabin John Regional Park at Locust Grove Nature Center. We will be focusing on non-native, invasive vines, especially porcelainberry (Ampelopsis glandulosa var. brevipedunculata). Native Virginia creeper and poison ivy are also present and beneficial, so we will avoid those.