- You will get 600+ Seeds of Great Lakes Batavian Head Lettuce Vegetable Seeds. - Seller Notes “Lactuca sativa - U.S. Grown seed. Organic. Tested 1/23-Germination 95%. Packed 1/23.”. - Planting Time: 9 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. - Great Lakes Batavian Lettuce Also known as French crisp or Batavia lettuce, summer crisp types are easy to grow, relatively tolerant of hot weather, and harvestable from baby leaf to full size. Very crisp like romaine, but sweet and juicy, without bitterness. The shape of the summer crisp plant is at first open, much like a loose-leaf lettuce, then matures into a heavy, compact bunch or head. Summer crisp lettuces perform best given slightly more fertility than loose leaf types. - Non-GMO, U.S Grown seed. Easy to grow from seed. Plant in early spring or fall. Loves cooler weather. Mother natures original recipe. Great for sprouts or salad greens. Salad greens can be harvested at anytime. 600+ Quality seeds per order. Thank You!. - Lactuca sativa. - Full sun. - Early spring, soil temp 35F+ or Fall, soil temp below 75F. - SOW 1/8" deep, 3"apart.Keep moist. - Germination 7-14 days. - Medium water. - Days to maturity 70. Pick outside leaves anytime.