Need a row of bushes, trees, or something for a semi-shaddy area, in a verry sandy soil with little maint. Going to be used for privacy form neiborghs dogs. She asked for red twig dogwoods, any other suggestions? Northern Indiana, zone 5, accross the road from a lake. The area is about 50' long and is between 10 to 20' wide. Thanks, my books are a little dusty.