Developed by Cornell University, this heat-tolerant, Bibb-type lettuce has quickly become a favorite since earning All America status in 1963. Its rich green leaves, sometimes tinged with red, form a beautiful rosette in the garden that holds well under stress and has good bolt resistance. A good source of vitamin A and phytonutrients. Grows best in full sun, but will tolerate partial shade and even appreciates it in spring in hot climates.