TOM THUMB LEAF LETTUCE. Organic. Non-GMO. U.S. Grown seed.Mother natures original recipe. Easy to grow. Likes cooler temps. Grows really fast and can be harvested at anytime. Can be grown in the garden or in containers. Most lettuce seeds will go dormant in temps over 75F so plant outside in early spring or fall. Also great for sweet,crunchy spouts. 600+ Quality seeds per order. Thank You! Lactuca sativa. Early spring,soil temp 35F+. Late Fall,soil temp below 75F. Sow 1/8" deep, 2" apart. Keep moist. Germinates in 6-10 days. Thin to 8"apart. Height 6" x 8" Wide.