Radish Seeds - Hong Vit. Heirloom, Non-GMO. Annual. Raphanus sativus. Up to 10 days, 20 days baby leaf. Cool season. This variety is one of the most popular grown radish varieties for micro to full maturity. As a microgreen, it has green leaves with a red stem. For baby leaf greens, harvest the whole plant as the green leaves have minimal hair and the red roots are very small. ~ 3,500 seeds / oz.