Seaweed Mustard Seeds - Oka Hijiki. Non-GMO. Heirloom. Non-GMO. Salsola komarovi. 30-40 days. Cool season annual. Also known as "seaweed on land" or saltwort, this nutritious, grass-like green grows wild in Japan's salt marshes and is also commercially cultivated. Its 12" long, matchstick leaves are excellent sources of vitamin A, calcium and potassium. ~6,000 seeds / oz.