Here are entered works on a method of farming and soil and water conservation practiced on hills and sloped lands by constructing ridges and channels across the slope. Works on gardens with raised flat sections on sloped surfaces and hillsides are entered under [Terrace gardens.] Works on gardening on patios, decks, and porches, typically using containers, wall planters, hanging baskets, and/or trellises are entered under [Patio gardening.]