To define a number range, you have to create a new number interval: 1  Specify an alphanumeric key with up to 2 characters. 2  Specify the limits of the number interval.  Mark the number range if it is planned for external number assignment.
Inspect the lettuce plants for leaves that are ready to harvest. Most leaves are mature enough once they reach 1 to 3 inches long, but they should still be tender up to 6 inches long. Cut off the outer leaves of the plants with a small pair of garden shears to harvest just a few leaves.
1 You could lose about a fourth or third of your lettuce. 2  Fold each half of lettuce in half and cover tightly with aluminum foil. 3  Lettuce will last fresh for days and will not be limp. 4  Celery works as well with the aluminum foil.