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.
Another way to avoid crop shade out is planting tall plants like corn in the northernmost part, medium-sized plants like squash and tomatoes at the center and short plants such as radishes and beets in the southernmost section of your vegetable garden.