A frenulum (or frenum) is a small fold of tissue that prevents an organ in the body from moving too far.
Cover crops usually are grown to prevent soil loss from wind and water erosion. Use fast-growing cover crops, such as winter wheat or annual rye, on fall-spaded gardens. A second, and probably more important reason home gardeners should use cover crops is to improve soil structure and increase organic matter.
Potential benefits of cover crops are numerous: 1  Reducing the impact of wind and water passing over the soil surface can reduce erosion. 2  Adding organic matter to soil improves its physical condition, or structure. 3  Competing for light, water and nutrients may suppress weeds.