(VA) (Arlington Parks) Adults, teens and families ages 8 and up. Want to restore habitat and increase species diversity right here in Arlington? Work parties are held every month at over a dozen parks. We are making a real difference, with the return of ferns and wildflowers, and the animals that depend on them, in areas once covered in destructive invasive plants. For more sites or information, visit our Invasive Plants page. Sign up at https://www.signupgenius.com/go/LongBranch#/ Registration Not Required.