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.
One of the best ways to take this cutting is with a utility knife or razor blade. You need the outer layer of the stem attached to the petiole. Start about 1/4 inch above the petiole and cut a circle, spacing the leaf petiole in the middle of the circle. Peel the heel cutting away from the plant stem.ne of the best ways to take this cutting is with a utility knife or razor blade. You need the outer layer of the stem attached to the petiole. Start about 1/4 inch above the petiole and cut a circle, spacing the leaf petiole in the middle of the circle. Peel the heel cutting away from the plant stem.