Lactuca sativa. USDA organic. Cool season. 40 days. Sow in early spring through fall. Heirloom. A favorite of generations of gardeners because of its heat tolerance and fast growth. Consistently crisp and delicious! After more than 150 years, Black Seeded Simpson remains one of the most tender and delicately flavored leaf lettuces ever bred. Full sized, frilly leaves can be picked in just over a month, and baby greens can be harvested in three weeks! Withstands hot, dry conditions and light frosts better than other varieties. This packet sows up to 184 feet. We are dedicated to inspiring & educating the gardener in you. That's why we put even more helpful information inside. No GMOs. All our seeds are untreated. www.botanicalinterests.com. Certified organic by the Colorado Dept of Agriculture.