Lettuce Seeds - Summertime

65-80 Days to Maturity. Lactuca sativa . Summertime Lettuce Vegetable Seeds. Non-GMO, annual open-pollinated, heirloom lettuce seeds. Summertime lettuce strain is known for its heat tolerance and resistance to bolting making it a good choice for summer gardens. It is often difficult to grow crisphead lettuce in areas with cold winters and hot summers as lettuce performs best with a long cool seaso…