The most widely used are white mustard (Brassica hirta), Indian or brown mustard (Brassica juncea), and black mustard (Brassica nigra), which gives off a particularly virulent essence capable of causing blisters on the skin.
Kõige laialdasemalt kasutatakse valget sinepit (Sinapis alba), india ehk sarepta sinepit (Brassica juncea) ja musta sinepit (Brassica nigra), mis eritab eriti tugevalt mürgist õli ning mis võib nahal ville tekitada.