What to Look For
Lettuce leaves should be crisp and be a bright light green with a spherical shape.
- 95-100% Relative Humidity
Under optimal conditions lettuce can keep for 21-28 days. At 5°C the shelf life is reduced to 14 days assuming there is no presence of ethylene.
Keep lettuce away from drafts to prevent dehydration.
Response to Ethylene
Crisphead lettuce is extremely sensitive to ethylene. Exposure will result in rusting and russet spotting (development of brown spots).