Orchards (and Olives) are an intentional planting of trees or shrubs that is maintained for food production. Orchards comprise fruit- or nut-trees that are generally grown for commercial production. Orchards are also sometimes a feature of large gardens, where they serve an aesthetic as well as a productive purpose. A fruit garden is generally synonymous with an orchard, although it is set on a smaller non-commercial scale and may emphasize berry shrubs in preference to fruit trees. Most temperate-zone orchards are laid out on a regular grid; with a grazed or mown grass or bare soil base that makes maintenance and fruit gathering easy. Orchards are sometimes concentrated near bodies of water, where climatic extremes are moderated and blossom time is retarded until frost danger is past.