Brassica is a genus of plants in the mustard family (Brassicaceae). The members of the genus are informally known as cruciferous vegetables, cabbages, or mustard plants. The genus Brassica is known for its important agricultural and horticultural crops and includes a number of weeds, both of wild taxa and escapees from cultivation. Brassica species and varieties commonly used for food include broccoli, cauliflower, cabbage, choy sum, rutabaga, turnip and some seeds used in the production of canola oil and the condiment mustard.