The charlock mustard, field mustard, wild mustard, or charlock, is an annual or winter annual plant. The flowers are pollinated by various bees, The leaves of wild mustard are edible at the juvenile stage of the plant; they are usually boiled, such as in 18th century, in Dublin, where it was sold in the streets. During the Great Famine of Ireland, wild mustard was a common famine food, even though it often caused stomach upset. Once the seeds are ground, they produce a kind of mustard.
A type of oil can be extracted from the seed which has been used for lubricating machinery