Crops that can survive under snow—but not sustained freezing temperatures or ice–include asparagus, rhubarb, beets, broccoli, Brussels sprouts, cabbage, carrots, cauliflower, cress, rutabaga, spinach, endive, horseradish, kohlrabi, kale, leek lettuce, onions, parsley, parsnips, radishes, and turnips.
How cold is too cold for lettuce?
Lettuce may cope with light freezing and even one or two hard freezes, but once the thermometer reads 25°F or below, the plants are in danger. That level of cold causes ice to form in the plant tissue, regardless of the amount of moisture in the air.
Do I need to cover lettuce plants?
Prevention is the best cure, so cover lettuces with insect-proof mesh (such as Enviromesh) from June until August, as this will prevent aphids getting to the roots. Some lettuces are resistant to root aphids.
What is the most cold hardy lettuce?
I’ve seen some small unprotected lettuces survive down to 5F (-15C) – Winter Marvel, Tango, North Pole, Green Forest. Other particularly cold-hardy lettuce varieties include Brune d’Hiver, Cocarde, Esmeralda (a bibb), Lollo Rossa, North Pole (bibb), Outredgeous, Rossimo, Sunfire and Vulcan.
What weather is best for lettuce?
Lettuce loves cool weather. You can begin planting leaf, romaine and butterhead lettuce as soon as the soil can be worked in the spring. Depending on the variety, lettuce germinates in temperatures between 40 to 85 degrees F.
What happens if lettuce freezes?
Freezing causes ice crystals to form within the lettuce’s cell walls. Because lettuce is so delicate and so high in water content, these crystals cause the cells to rupture, leading to unsightly and off-tasting crystallization.
What temps can lettuce tolerate?
Lettuce is adapted to cool growing conditions with the optimum temperatures for growth of 60 to 65°F. At 70 to 80°F, the plants flower and produce seed. Lettuce can tolerate a few days of temperatures from 80 to 85°F, provided that nights are cool.
How do you protect lettuce from frost?
To protect lettuce in frost-prone areas, plant romaine or butterhead lettuce, which are the most cold-tolerant. When frost is predicted, cover the garden with sheets or towels to provide some protection. This will help in the short term, but if prolonged frost is due, your lettuce is likely in jeopardy.
Will cold weather germinate lettuce?
Cold-adapted varieties survive much lower temperatures. Seed germinates best at about 75 degrees F. Lettuce seed will germinate at a temperature as low as 40 degrees F.
How do you pick lettuce so it keeps growing?
Plan to harvest your lettuce leaves in the morning, when they’ll be at their crispest. Cut the outer lettuce leaves about 1 inch above the crown. This protects the crown so the lettuce can continue growing. Cut off the amount of lettuce needed when the leaves reach a length between 3 and 6 inches.
Does lettuce regrow after winter?
Its succulent leaves and stems make it a top choice for salads. Cut the stems, leaving at least 5 cm (2 inches), and the leaves will grow back.
What lettuce will grow in winter?
Salanova lettuces for winter
They’re also cold and heat tolerant and have an excellent flavor and texture. There are many varieties of Salanova available to grow but my favorites for winter harvesting include Green Butter, Red Butter, Red Oakleaf, and Green Sweet Crisp.
How do you overwinter lettuce?
I transplanted them outside in either late October or early November (memory isn’t serving me right now). I placed some straw mulch around them, and then covered them with a makeshift cold frame made out of PVC pipe and floating row cover. There they remained all winter long.
Does lettuce need a lot of water?
Lettuce has shallow roots, so plants need consistent watering. Check at least twice a week and water if the soil is dry down to 1 inch deep. Containers of lettuce need to be watered more frequently than garden beds, especially in the summer.
How many days does it take to grow lettuce?
Most lettuce varieties mature in 45 to 55 days, allowing many gardeners to plant two or even three crops. But looseleaf and butterhead leaves can be harvested at just about any time in their development. Heading varieties take longer to mature. Romaine takes 75 to 85 days and crisphead 70 to 100 days.
Does lettuce need full sun?
How much sun does lettuce need to grow? Most lettuce varieties enjoy full sunlight. For the best turnout, make sure you plant your lettuce in an area that receives approximately 6 to 8 hours of direct sunlight each day. Some varieties can also be grown in partial shade, receiving 4 to 6 hours a day.
Can frozen lettuce Be Saved?
Use frozen lettuce within six months for best quality. Frozen lettuce has its place in the kitchen. You can add it to soup or stock, quiche, casseroles, and stir fries. You can substitute frozen lettuce in any recipe that calls for spinach.
Can you recover frozen lettuce?
Just like other frozen food, defrosting frozen lettuce is completely easy. Simply place the package in the refrigerator and let it thaw slowly. Use thawed lettuce immediately after thawing. Cook it up into delicious dishes or blend into healthy smoothies.
Why does lettuce not freeze?
But, other vegetables, like lettuce and cucumbers, have a lot of water in them and more delicate cell walls. The ice crystals damage these vegetables so badly that they really can’t be frozen without turning into mush. Ice crystals can reduce almost any vegetable to mush if poor freezing technique is used.
Can spinach survive a freeze?
According to Myers, the hardiest vegetables that can withstand heavy frost of air temperatures below 28 include spinach, Walla Walla sweet onion, garlic, leeks, rhubarb, rutabaga, broccoli, kohlrabi, kale, cabbage, chicory, Brussels sprouts, corn salad, arugula, fava beans, radish, mustard, Austrian winter pea and
Does lettuce come back?
Lettuce regrows once its leaves have been cut or picked off the main stem. As long as the root is intact in the ground and there are at least 1-2 inches of stem and leaves at the base, lettuce will shoot new growth in as little as a week. The cut-and-come-again harvesting method is the most popular.