Yellow and white sweet clover appear very similar except for the distinguishing yellow or white flowers. Yellow sweet clover is usually smaller than white sweet clover and blooms earlier.
Sweet clovers are members of the legume family.
They are biennial. Plants are strictly vegetative in the first year and have a small, branched stem with clover-like leaves. Leaves are divided into three finely toothed leaflets, with the middle leaflet occurring on a distinct stalk. In the second year, plants may appear bushy, and grow from three to five feet in height. The flowers are packed densely on the top four inches of an elongated stem.