Southern States Yellow Sweet Clover is a biennial legume, with a deep taproot and dense root system making it an excellent choice for soil improvement. It can also be used for hay, silage green manure, and pasture and is one of the most valuable plants for honey production. It will thrive under a wide range or soils and climatic conditions but will not tolerate acid soils. Yellow sweet clover is drought tolerant, winter hardy and highly alkali tolerant.