What's the proper way to harvest lettuce for regrowth?
Written by
Benjamin Miller
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.To harvest regrowth of lettuce, cut and come again! Leaf varieties should be cut with the cut-and-come-again method. This means slicing off the outer leaves 2.5-5 cm (1-2 in) from the base of the crown. Never cut off more than one-third of the overall plant, though. The plant will send out growth from the center again within a few days.
Cutting Technique
- Position: Always cut 1-2 inches above soil level
- Tool: Sanitize sharp scissors before each use
- Frequency: Harvest every 7-10 days maximum
Aftercare Protocol
- Watering: Soak soil within 2 hours of cutting
- Fertilizer: Apply 5-5-5 NPK solution after harvest
- Protection: Shield plants from midday sun exposure
Maximize regrowth by keeping the plants consistently moist, watering at the base of the plants, and avoiding the leaves. Fertilize with a balanced liquid feed after each cutting. I use fish emulsion every week. Protect your plants from temperatures above 75°F (24°C), as this signals them to bolt and stop regrowing.
Rotate your harvesting zones across the rest of your lettuce patch. Pick outer leaves and move inwards. This way, stress is equally distributed, and you also have a constant supply if you combine this method with succession planting. I sow every two weeks, so I have seedlings coming along constantly, and therefore fresh greens each day all year long.
Avoid These Common Dangers When Regrowing Lettuce - Don't ever cut the central growing point, or you will lose your plant! - Always sanitize blades. Lettuce will wither, and disease will spread if even a small microbe is transferred. - Keep an eye out for pests that are attracted to fresh cuts. With the right attention, your lettuce plants become perennial producers. Start using these tips today!
Read the full article: When to Harvest Lettuce for Best Results
