Whenever someone asks us what’s a good vegetable for beginning gardeners, we always answer with lettuce (and radishes). Lettuce is easy to grow, delicious to eat in salads and on sandwiches, and, if you harvest it properly, it keeps coming back again and again for multiple harvests!
If you’re a first-time lettuce grower and curious about when and how to harvest your lettuce plant, let us guide you! No matter if you’re growing leaf lettuce varieties, crisphead lettuce, romaine lettuce, or iceberg lettuces—we’ve got you covered.
When is lettuce ready to harvest?
Head lettuces (like romaine, bibb, Boston, butterhead, or iceberg) can be harvested at the leaf stage, but most folks wait until the plant has formed a head of lettuce and then they harvest the entire plant.
How long does lettuce last in the garden?
Lettuces are cool season crops and prefer cool weather. When the weather gets too warm, lettuce will bolt and go bitter. In mild climates, you can get by with lettuce growing in the ground for the entire growing season. In places where summers get hot, lettuce will need partial shade during the hottest part of the day—and even then, will still eventually bolt.
Sow new lettuce seeds every 10-14 days throughout the spring and early summer to ensure a continuous harvest of lettuce.
What time of day should you harvest?
You want to harvest lettuce during the coolest part of the day to prevent the leaves from wilting. For many folks, this is either early in the morning or in the evening.
If you must harvest during the hottest part of the day, make sure to immediately cool the lettuce by sticking it in the refrigerator.
How do you pick lettuce so it keeps growing?
How you harvest your lettuce will depend a little on what type of lettuce you have and the maturity level of the lettuce you are harvesting.
To harvest leaf lettuces (or immature leaves from head lettuces)
- Using scissors or snips, cut the outer leaves of the plant until you have enough.
- If you choose to harvest an entire plant, make sure to cut the plant about 1″ above the soil surface to ensure enough plant energy for regrowth.
To harvest head lettuces (romaine, iceberg, or loose-head varieties like bibb, Boston, buttercrunch, etc.)
- Using a sharp knife or scissors, clip the entire head of lettuce at the base of the plant.
- Head lettuces can also regrow, so make sure to leave about an inch of the plant above the soil surface so it can regrow.
How many times can you harvest lettuce?
Lettuce is a great cut-and-come-back crop! Depending on your growing season and the type of lettuce you grow, you can harvest from the same lettuce plant for many months.
Why is my lettuce bitter?
Lettuce goes bitter thanks to summer heat. The heat of summer sends the lettuce into bolting and flowering, and that process produces bitter lettuce. Even if your lettuce hasn’t flowered yet, you might have bitter lettuce as it prepares to bolt.
How do I stop my lettuce from bolting?
If you live in a climate with hot summers, bolting lettuce is just par for the course, but there are a few ways to slow the bolting:
- Plant heat-tolerant lettuce varieties—Valmaine is one of our favorite heat-tolerant romaine lettuces!
- Provide some afternoon shade—You can do this by planting lettuce with larger plants (like tomatoes or sunflowers) or by using shade cloth floating row covers.
- Succession plant—Plant a new crop of lettuce every few weeks so new plants are coming into maturity frequently.
- Use mulch—A good, thick layer of mulch will help regulate the soil temperature and keep in moisture.
How do you store lettuce to keep it fresh?
Lettuce needs cool, moist conditions to keep it fresh for as long as possible. The refrigerator has the cool part down, but not the moist. You can wrap clean lettuce in a damp (but not wet) dish towel and store it in an airtight container. Or, you can use what we use—the amazing VejiBags! They keep lettuce fresh for 10-14 days!
Can you regrow lettuce in water?
Yes! Romaine lettuces that you buy from the grocery store are perfect for regrowth at home. When you cut off the lettuce, make sure to leave about 1-2 inches on the stub. Then place the stub in a low-ball glass with about an inch of water in a sunny windowsill. Within 2-3 days, you should start to see new growth coming out of the middle of the rosette! Change the water every couple of days.
Once the new growth is between 1-2″ tall, it’s time to pot up. Place the lettuce in rich, moist soil with the entire original plant underground. Water it, and get ready to harvest a brand new head of romaine lettuce in a couple of weeks!
What are your favorite ways to use lettuce?
Few things are better than a huge, fresh salad from the garden in the springtime! But don’t let salads be the only way you use lettuce—here are some of our favorite lettuce recipes (salad and not) for you to test out:
- We live by mason jar salads when things are hectic.
- Have you tried grilling your romaine yet?
- If you love entree salads, this BBQ grilled chicken salad is a fantastic option.
- Serve these baked falafel lettuce wraps as an easy weeknight dinner or delicious packed lunch.
- Who can say no to a BLT, especially in pasta salad form?
Growing lettuce is a wonderful experiment in various flavors, textures, and colors, and now, no matter what lettuce variety you’re growing, you know the perfect way to harvest it. Enjoy!