Garden rollers are a versatile tool that is useful for preparing a flat seedbed for new grass, smoothing out lumps and divots, improving seed germination and correcting damage caused by frost heaving. A common hesitation when buying a garden roller is the risk of soil compaction, but this can be avoided by rolling only when necessary, and by keeping the weight as light as possible by filling with water for most tasks, and only using sand when maximum pressure is needed. With its wide range of uses, a lawn roller can significantly improve the quality and health of your garden.