Yellow blossom sweet clover is a cold tolerant biennial that is very easy to establish. Drought and cold tolerant, use for erosion control on saline and alkaline soils. As a cover crop yellow clover brings potassium, phosphorus and nitrogen to the surface of the soil. This drought-resistant clover is a vigorous grower. Yellow Blossom Sweet Clover is one of the best honeybee nectar sources as well as an excellent cover crop.