For space efficiency and high yields, it’s hard to beat a vegetable garden grown in raised beds. Raised beds can improve production as well as save space, time, and money. They also are the perfect solution for dealing with difficult soils such as heavy clay. In addition, raised beds improve your garden’s appearance and accessibility.
Raised gardening beds are higher than ground level, and consist of soil that’s mounded or surrounded by a frame to keep it in place. The beds are separated by paths. Plants cover the entire surface of the bed areas, while gardeners work from the paths. The beds are usually 3 to 5 feet across to permit easy access from the paths, and they may be any length. You can grow any vegetable in raised beds, as well as herbs, annual or perennial flowers, berry bushes, or even roses and other shrubs. read more>>http://www.organicgardening.com/learn-and-grow/raised-bed-gardening