Grand Rapids Lettuce Seeds (Leaf Type) 1720 Heirloom Vegetable. The ruling Monarch of the leaf lettuce family since its introduction in the late 1800’s! Crispy, succulent, light green leaves are lightly crinkled and possess a fine delicate taste. This is an excellent variety for cut and grow again multiple harvests. You can also successfully grow a continuous supply of Grand Rapids outside of the normal growing season by using a cold-frame, light garden or even sunny window! Soil-less (peat moss based) potting soils work best for indoor growing. Use water soluble 20-20-20 fertilizer every two weeks to promote strong growth. 880 seed/gram. Lettuce is a sun-loving cool weather crop that grows best in organic, well drained soil. Sow as soon as the soil can be worked in the spring, then every two weeks thereafter to ensure a continuous supply. Sow about 3 mm (1/8″) deep in rows 45 cm (18″) apart. An even supply of moisture during the entire growth period is imperative for success. Harvest leaf lettuce by either pulling the entire plant or by cutting leaves from the main stem at least 2.5 cm (1″) above the base – this will allow the plant to sprout new leaves. Harvest head lettuce by cutting the head off at the base just below the lower leaves. Once lettuce bolts (starts to produce a rapidly growing flower stem) leaves become bitter.
