65-75 Days to maturity. Ocimum basilicum ’Lettuce Leaf’. Lettuce Leaf Basil Herb Seeds. Non-GMO, organic, hybrid, annual. This Japanese variety of basil is similar to the more well-known Italian basil. It is sweet-smelling and has large leaves with crimped edges and thick stems. Lettuce Leaf Basil has been used for centuries to aid digestion, is exceptional in an herb garden, and has a multitude of culinary applications. ~ 2,000 seeds/oz.