- You will get 1 Oz Seeds of Tendergreen Mustard Vegetable Seeds. - Seller Notes: “Brassica rapa var. perviridis. U.S. Grown seed. Organic. Tested 1/23- Germination 94%. Packed 1/23.”. - Planting Time: 9 Weeks. - Soil Type: Clay, Loam, Peat, Sand. - Life Cycle: Annual. - USDA Hardiness Zone (°F): 9 (20 to 30 °F). - Soil pH: Neutral. - Watering: Medium. - Sunlight: Full Shade. - Tendergreen Mustard Greens are a cross of spinach and mustard. Easy to grow from seed. Will tolerate a light frost. TENDERGREEN is mild-flavored, grows super-fast and is ready for the table in no time. For best flavor, harvest leaves before full grown. Days to maturity 40, harvest anytime. Also great for sprouts. 17,000+ Seeds per ounce. - Brassica rapa var. perviridis. - Full Sun. - Early Spring or Fall. - SOW 1/4" deep. 6" apart. Keep Moist. - Germinates in 10 - 14 days. - Medium Water. - 40 days to maturity. Harvest anytime.