Harvesting and storage
It may only take as few as 60 or 70 days for lettuce to mature depending upon the variety and temperature.
Head lettuce crops should be harvested as soon as they reach maturity. Leaving them in the garden
too long may result in bolting, sunburn, or possibly damage from freezing. Leaf lettuce can be harvested
either all at once or over a long period of time by breaking off the outside leaves and allowing
the interior leaves to continue to develop. Lettuce has a fairly short shelf life and it should be
refrigerated as soon after harvest as possible.
Harvesting late may result in frost damage