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.
Step 4. Save the seeds of lettuce by letting your lettuce plant go to seed. Allow the seed heads to dry for two to three weeks after flowering. Cut the entire top off of the plant and hang it upside down to dry. Harvest the seeds by gently shaking or rubbing them off of the stalk.