3.) Harvesting: The idea is to harvest your lettuce before it bolts because bolted lettuce acquires a bitter taste. You will need to harvest each plant sooner than usual during the summer since bolting occurs much faster. This video shows you how to harvest leaf and head lettuce. Notice how leaf lettuce will grow back after employing the harvesting method shown in the video. Video - How to Harvest Lettuce.
What if some of your lettuce needs to be harvested but you’re not ready to use it quite yet? No worries, simply take it out of the Tower, don’t remove the roots (you can cut them back), and store it in the frig in a container or plastic bag keeping the roots moist. As long as the roots remain moist, the lettuce should stay fresh for at least two weeks.
4.) Seedling Planting Frequency: Because lettuce has a tendency to bolt quicker in the summer, plant seedlings frequently so you’ll have an ongoing crop. Everyone’s situation is a little different but we’ve been planting new lettuce seedlings every 4 weeks or so.
5.) Summer Lettuce Varieties: Some varieties of lettuce do better in the heat than others. We’ve been happy with Red Crisp Cherokee and Magenta, Rex Bib, and Red Fire. All are available from Johnny Seeds.
I hope this information helps you enjoy a summer full of crisp, tasty, fresh-picked lettuce!
Questions? Contact me Tracy@EndlessHarvestTowers.com