- You will get 601+ Seeds of Green Ice Lettuce Vegetable Seeds. - Seller Notes: “Lactuca sativa. U.S. Grown seed. Organic. Tested 1/23-Germination 96%. Packed 1/23.”. - Planting Time: 6 Weeks. - Soil Type: Clay, Loam, Peat, Sand. - Life Cycle: Annual. - USDA Hardiness Zone (°F): 7 (0 to 10 °F). - Soil pH: Neutral. - Watering: Medium. - Sunlight: Full Sun. - Green Ice Lettuce. U.S. Grown seed. Organic. Non-GMO. Mother nature's original recipe. Green ice lettuce is a curled loose leaf romaine type lettuce with a good crunch. Green Ice comes from a cross between Grand Rapids and Fordhook lettuce varieties. Easy to grow. Likes cooler temps, below 65F. Overseed your row and thin for baby greens. Also great for crunchy sprouts.600+ Quality seeds per order. Thank You!. - Lactuca sativa. - Full Sun. - Spring, soil temp 35+. Fall, soil temp below 75F. - Sow 1/8" deep, 3" apart. Keep moist. - Germinates in 6-10 days. - Medium water. - 45 days to maturity. Pick anytime.