(VA) (Northern Virginia Bird Alliance) Do you like working outside? Join community volunteers in protecting the local environment from non-native invasive plants.  This is a continuing project on every Thursday and the first Saturday of each month to reclaim Upton Hill Regional Park from non-native invasive plants.  To learn more about Arlington's invasive plant program, visit https://environment.arlingtonva.us/trees/invasive-plants/.  To learn more about ...