Traditional full-sized head lettuces produce larger volumes of lettuce per head than mini heads. Due to their larger frame they require more space to grow and longer to mature. Variety selection is key in maintaining a continuous supply of lettuce throughout the season. Johnny's helps take the guesswork out of your lettuce succession plantings by providing a recommended Full Head Lettuce Planting Program. To compare characteristics of each variety, including availability as conventional, organic, or pelleted seed, see our Lettuce Varieties | Quick Reference Chart.