I am just starting the Master Rain Gardener Program though the city of A2. I have an area that already catches rain, but its all a bunch of vinca and Virginia Creeper. I'd like to tear that all out, remove some of the smaller Norway Maples, and plant with natives, and install a rain garden too. The downspout for 1/2 the house, plus the garage empty here, approximately 870 s.f, so it's a goodly amount.