Sinapis arvensis

Yellow charlock, Karlock, Brassics, Cadlock, Carlic, Corn mustard, Wild mustard


In spring cereals, competes strongly for soil nutrients. It also has an extensive root system.

Charlock young1. Cotyledons are kidney-shaped.
Charlock 22. The first true leaf has a broad, rounded tip and shallow indentations along its margins.
Charlock 33. An upright annual with characteristic yellow flowers.