Are mustard green plants related to mustard?

Yes, mustard green plants (Brassica juncea) belong to the same family Brassicaceae as mustard seeds (Brassica nigra). This family shares similar morphological and genetic characteristics. Mustard green plants are leafy vegetables typically used in salads, stir-fries, or as seasonings. The mustard seeds come from a different species within the Brassicaceae family known for their sharp and flavorful use as a condiment. However, both share many nutritional properties that often accompany Brassica species, such as antioxidants, vitamins, and minerals. Despite some similarities, mustard greens have a much milder and distinctive flavor profile compared to the spicy kick of mustard seeds.