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.
The grass species most valued for use as cover crops are those that germinate and establish quickly, produce large quantities of fibrous roots and shoots, and are readily removed by tillage or herbicides. Small Grain Cereals. Small grains are fast to germinate, cold tolerant, and high yielding.