I just put up a shed that is about 10 feet from my horse paddock. It will be hard to mow this area, so I want to plant it with horse-friendly plants. Only concern is the side of this steel building faces west, so in the summer afternoon hours it gets pretty hot back there. The soil is crap, red and gray clay with horse poo mixed in. I have had luck in other areas with coneflowers, peonies, sedum, beebalm, and hostas. I want to try sedges/grasses, roses, daisies, lilies, etc as well (stuff I can divide and multiply). Will my little ecosystem be unfriendly to these plants?