(MD) (Montgomery Parks) Save the trees and the stream valley ecosystem. Join Maria, Weed Warrior Supervisor, for a non-native, invasive plant removal workday in Rock Creek Stream Valley Unit 6. We will be focusing on non-native, invasive vines, especially wisteria (Wisteria sinensis and Wisteria floribunda).  Native Virginia creeper and poison ivy are also present and beneficial, so we will avoid those.