Lettuce thrives in cool conditions. Be sure to thin properly and keep evenly moist for sweet tasting, full heads. For a constant supply, make several sowings a few weeks apart until summer weather turns hot.
Plant again in late summer for fall harvest. In hot weather, give lettuce some afternoon shade and check water daily. Feed with liquid fertilizer every 2 weeks.
Try setting seedlings around the edges of a big pot holding a young tomato or pepper plant. Harvest the lettuce as the bigger plant grows to need the space.
HARVEST AND USE
Savor young lettuce thinnings in your first spring salads. Then harvest plants by cutting mature heads when they feel firm and well-filled. Pull over-mature plants if they begin to elongate (“bolt”) in hot weather, as leaves turn bitter at this stage