Mustards are winter crops. The plant reaches about 4-5 feet in height and bears golden yellow colored flowers. Its tiny, round seeds measuring about one mm in diameter are encased inside a fruit pod, in a similar fashion like green pea pod.
White mustard seeds (Sinapis alba or Brassica alba): The seeds are light straw-yellow colored and are slightly larger than the other two varieties. White seeds exhibit mild pungency.