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.
If the leaves are not ready yet, you can partially cover unattractive foliage with spring annuals such as pansies or petunias. Plant other perennials such as peonies, daylilies and hostas to help hide brown daffodil, as well as tulip, leaves. Ferns and other greenery also provide camouflage for gardens and landscapes.