Garden rollers are garden tool used for flattening the land in gardens and lawns. Garden rollers are manufactured in a range of sizes. Garden rollers are used for flattening the land in lawns and small gardens. Garden rollers are cylindrical in shape and are usually made of metal or tough plastic, they can be filled with water or sand to add the weight. Using garden rollers over a land breaks large clumps of dirt and mud, thus making weed control easy. Use of garden rollers prevents moisture loss from the soil.