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What temperature is too cold for lettuce?
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. Lettuce seed will germinate at 35°F, but optimum germination is 70 to 75°F. If the plants are sufficiently hardened, they will withstand freezing.
Can you grow lettuce all year round?
lettuce (butterhead) ‘All Year Round’ You may never need another lettuce variety again. As the name suggests, this is one you can sow and grow at any time of the year: as a general rule expect to pick your lettuces around 10 weeks after sowing. Protect from slugs and cover early and late sowings with a cloche.
Can leaf lettuce survive a frost?
Does your lettuce need to be protected from frost? Lettuce seedlings will generally tolerate a light frost and, unlike most vegetables, continue to grow through the fall when the possibility is a probability in some regions.
What temperature will kill lettuce?
Colder temperatures (26-31 degrees F.) may burn foliage but will not kill broccoli, cabbage, cauliflower, chard, lettuce, mustard, onion, radish, and turnip.
What month should you plant lettuce?
Begin planting fall lettuce in late summer so it reaches maturity when the fall air is cool. Head lettuce is usually started indoors or in a cold frame and transplanted in the spring after the last frost date.
Should I protect lettuce from frost?
You can protect your cool season crops (including lettuce, which is more easily injured than other greens), by throwing a blanket or row cover over the plants. In zones 8 and 9, where tomatoes and peppers bearing fruit may still be in the ground, plants can easily be covered to protect the final harvest.
Will a freeze kill lettuce?
Lettuce is considered “hard frost hardy,” which means it can withstand frosts below 28 degrees. If the frost continues unabated, however, the cell walls may form ice, and the plant actually freezes. Freezing is irreversible and will kill a lettuce plant.
Can you grow lettuce indoors in the winter?
The winter season shouldn’t deprive you of fresh, healthy, and organic greens and vegetables. If NASA can grow fresh veggies in outer space then why not in your own space. Extend your gardening season, save your energy bills, and enjoy fresh greens this winter by growing lettuce indoors. Loving your salad garden?
Can you grow lettuce in a cold frame box?
Please keep in mind that a cold frame box will allow you to grow lettuce in winter but depending on how harsh the winter is, the lettuce may not grow all winter. If winter is mild and you harvest the lettuce frequently the cold frame box could literally keep your lettuce alive until spring.
When to plant lettuce seeds for the fall?
Up until around August, you can still sow a wide range of lettuces. Some grow quickly and produce a crop for the fall even without the need for any special winter protection. Others are hardy enough to survive with some kind of protection even once the first frosts arrive.
When to pick Winter Lettuce in the UK?
The lettuces outside the cloche will be picked first, leaving those under the cloche for consumption in late autumn and early winter. You can also grow in the autumn and overwinter, the ‘cut and crop’ again type rocket, into a container which means it can be covered or moved into shelter if poor weather threatens.