40-55 Days to maturity (baby leaf 20-25 days)Brassica juncea Crimson Red Mustard Seeds. F1 Hybrid, Non-GMO, Annual. This highly attractive new red mustard green from Japan can be harvested at any stage, depending on how you want to use it. Harvest young for salad and braising mixes, or for a gourmet garnish. This "green" has a very dark red color and a pretty leaf shape. The appearance and mildly spicy flavor add depth to any recipe. It retains the deep red leaf color even in the summer months. Approximately 7,500 seeds / oz.