Made of black or white plastic, the Low Profile Reader (2001 or 2001W) can be flush or surface mounted, bracketed, or concealed behind glass, plaster, or other nonmetal surfaces.
Growing Head Lettuce. 1  1. Choose a head lettuce variety for indoor planting. 2  2. Prepare seed trays. 3  3. Sow the seeds 4-6 weeks before the last spring frost.  4. Give the seeds plenty of sunlight and 1  water. 5. Transplant into the garden.  6. Fertilize the lettuce three weeks after 1  transplanting. 7. Cut mature leaves.
Wipe a pair of sharp scissors to remove any dirt or debris. This reduces contamination of the lettuce leaves you're harvesting and protects the plant that continues growing. Cut the outer lettuce leaves about 1 inch above the crown. This protects the crown so the lettuce continues growing. Cut off the amount of lettuce needed when the leaves reach between 3 and 6 inches.