Many herbicides are not specific to sweetclovers or may not be specifically licensed for this particular use. It is important to read and follow all label directions. The herbicide 2,4-D partially controlled sweetclover. Research into the biological control of sweetclover has not received attention because of the importance of sweetclovers in agriculture. However, both species have some introduced and North American pests that may have some potential.
Adults feed on the foliage of sweetclover, and larvae feed on the roots.
Early spring or fall feeding by this weevil on seedlings may be severe enough to kill plants. Both sweetclovers are palatable plants to most grazers. Domestic livestock, deer, rabbits, and other herbivores readily feed on these plants. Heavy grazing in the spring may reduce the density of sweetclovers. Akeson, W.R., H.J. Gorz, and F.A. Haskins.