Volunteers are making a significant environmental impact in Baltimore County this week by planting trees to help clean local waterways. The Ruxton neighborhood in Towson, already a heavily wooded enclave, is receiving additional foliage as part of a community initiative. The nonprofit Blue Water Baltimore is planting more than 60 native species trees in yards and on walkways in Ruxton and adjacent Riderwood. The hilly area sits along the Jones Falls watershed, which empties into the Inner Harbor