Stop Guessing. Start Harvesting.
Why Single Harvesting Hurts Your Lettuce Yield
In commercial lettuce production, the most expensive habit is cutting the entire plant down to the root and treating each lettuce as a one-time crop. The question how to harvest lettuce so it keeps growing is common among growers who want to reduce plug costs and keep a steady flow of young leaves for salad buyers. The commercial standard answer is to use a sharp knife and cut one inch above the crown. Leave the growing point intact and the plant will produce another flush. Organic Basil Pruning for Massive Yield: Commercial Grower's Guide
I spent two field seasons observing harvest crews in both conventional and hydroponic operations. The crews that have been trained to make a low cut above the crown never have to re-seed the whole block at the same frequency. Their total harvestable weight per tray can increase from a single head to an additional crop of tender leaves. This is not just a garden trick. For a grower purchasing transplants at USD 0.12 to USD 0.20 per plant, avoiding one transplant cycle on ten thousand plants means a direct savings of USD 1,200 to USD 2,000. In an industry with thin margins, that is a compelling reason to study this method. Growing Japanese Eggplant in Containers: A Commercial Grower’s Guide
What Is Lettuce Regrowth Harvesting?
Cut-and-come-again harvesting is the practice of removing only mature leaf tissue from the lettuce plant while preserving the central sprout and root system. The plant continues to photosynthesize and generates new leaves after each harvest. This is the definition used in commercial horticulture, and it is exactly how to harvest lettuce so it keeps growing over several weeks. All lettuce types can be handled this way, but response time differs. Loose-leaf types regrow quickly, while headed types such as crisphead are less suitable because they have a strong apical dominance and will force a stem rather than uniform leaves. Pest Repelling Herbs for Balcony Pots: Commercial Buyer’s Guide
