The herb is alterative, antiscorbutic and diuretic. It has been used used for the treatment of scurvy, impurities of the blood etc. It is also used as a remedy for scrofulous affections, especially of the skin, and is bruised and applied externally for healing burns and ulcers.
Corn speedwell is a winter annual weed with tiny bright blue flowers. It prefers sunny locations in poor soils that are moist to dry in disturbed areas. It is low-branching and spreads by seeds, occasionally forming colonies. It can be invasive outside of Europe and Africa.