A frenulum (or frenum) is a small fold of tissue that prevents an organ in the body from moving too far.
Others, such as buckwheat, are very frost-tender. The cover crops listed here are widely adapted and can be grown in most areas of the United States, either as a summer or winter cover crop, depending on where you live. Rye This crop comes in two different types: annual rye and cereal rye. Both have their advantages.
Quick Answer. There are nine standard varieties of tuber crops including cassava, yam, potato, sweet potato and aroids, such as carrots and turnips. Some tuber crops, such as yams and potatoes, are umbrella categories that contain a number of sub-species within their families.