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.
Grow more organic matter, grow healthy and productive crops, and plan a high residue rotation that includes: 1  sod crops that leave lots of roots in the soil (small grains or forages), 2  crops that leave a lot of surface residue (e.g., grain corn), 3  cover crops that supply both.