(MD) (Montgomery Parks) Save the trees, protect the stream valley ecosystem, and celebrate Martin Luther King Jr. Weekend of Service. Join Weed Warrior Supervisor Monica for a non-native, invasive plant removal workday. We will focus on non-native, invasive vines and shrubs, including roundleaf bittersweet, porcelainberry, Japanese barberry, and multiflora rose. Please note, the barberry and multiflora rose have thorns!