Killing Mosquito Larvae in Rain Barrel?
A rain barrel isnt a backyard pond. Putting any type of fish into a dark rain barrel is just plain cruel. Why not put a dollars worth of window screening across the top, and buy another dollars worth of bungee cords (from the Dollar store, of course) to hold...
Plant Shade Trees to Conserve Energy
Also, depending on the tree (hybrid poplars spring to mind), the root system becomes very extensive. Think about roots invading your sewer pipes, etc. before you plant one of these.