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.
Hereâs a quick video tutorial on the proper way to slice romaine lettuce â go figure, thereâs a proper way! Youâll waste less lettuce and probably stop buying the bagged lettuce because itâs so easy! My husband, Vadim taught me this method. He worked in Chilis restaurant for 5 years way back when we were dating.