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.
3. Trim back the entire plant when it reaches 3 to 6 inches high, or approximately every 10 days. Cut back to within 1 to 2 inches of the ground. Most loose-leaf lettuce varieties grow back from a severe trim to produce more leaves.
If you use leaf lettuce or romaine, where you lose about a third of each in preparation, you'll need about 23 pounds to yield 15 finished pounds. A. You need about 15 pounds of cut lettuce to feed 75 people, resulting in a portion size a little above 3 ounces.Taking into account the loss of about a quarter of each head of lettuce, you'll need to buy 20 pounds of heads to yield 15 pounds of edible greens.f you use leaf lettuce or romaine, where you lose about a third of each in preparation, you'll need about 23 pounds to yield 15 finished pounds. A. You need about 15 pounds of cut lettuce to feed 75 people, resulting in a portion size a little above 3 ounces.