What Temperature Does Lettuce Grow Best At?

How do you know when lettuce is ready to pick?

Lettuce leaves are ready for harvest when they have grown to about 3 to 6-inches long.

More leaves will grow back before the lettuce plant “bolts” or turns to mostly bitter-tasting, tough stems and seeds..

Will Frost kill leaf 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.

What temperature will kill vegetables?

Light freeze – 29° to 32° Fahrenheit will kill tender plants. Moderate freeze – 25° to 28° Fahrenheit is widely destructive to most vegetation. Severe or hard freeze – 25° Fahrenheit and colder causes heavy damage to most plants.

How often should Lettuce be watered?

The key to lettuce production is supplying moderate but almost constant water, especially during hot weather. Unless there is regular rainfall, lettuce must be watered deeply at least once a week- more frequently during periods of drought. Mulch with a layer of compost or clean straw to help the soil retain moisture.

What temperature is too cold for lettuce?

How to Grow: Lettuce is a cool-weather crop that thrives in the temperature range 60-65 degrees F, and if thoroughly hardened, most varieties survive temperatures as low as 20 degrees F. Cold-adapted varieties survive much lower temperatures. Seed germinates best at about 75 degrees F.

What is the best month to plant lettuce?

springLettuce is a cool weather crop and is best grown in spring and fall. The seeds germinate in temperatures as low as 40 F (4 C) but its ideal germination and growing temperature is between 60 and 65 F (16 to 18 C). To grow great lettuce, find a site that offers at least six to eight hours of direct sun.

Where does lettuce grow best?

The ideal lettuce growing location for spring and fall is in a spot that receives full sun. If you plan on growing lettuce during the summer or in warm planting zones, partial shade can provide protection from the heat.

Why are my lettuce seeds not germinating?

Lettuce is fussy about temperature, that’s for sure. It prefers soil temps somewhere between 40 – 80 degrees, but if it’s too warm, it won’t germinate, and too cold, it won’t sprout, either.

Does lettuce need full sun?

Soil, Planting, and Care. Although lettuce grows fastest in full sun, it is one of the few vegetables that tolerates some shade. In fact, a spring crop often lasts longer if shaded from the afternoon sun as the season warms. You can grow lots of lettuce in a small space, even a container.

Can leaf lettuce tolerate freezing temperatures?

6) Lettuce Immature plants are generally more cold-tolerant than mature plants, and many of us grow lettuce under protection and harvest it in the baby leaf stage. … I’ve even had lettuce survive 5 nights below 0 °F (-18 °C) under multilayered fabric low tunnels.

What grows well with lettuce?

16 Companion Plants to Grow Alongside LettuceAsparagus. When growing asparagus, you should leave a little of the crop to continue growing in your garden to allow the plant to store energy for next year. … Beets. … Calendula. … Carrots. … Chervil. … Chives. … Cilantro. … Eggplant.More items…•

What temperature will kill lettuce?

Colder temperatures (26-31F) may burn the foliage of, but will not kill, broccoli, cabbage, cauliflower, chard, lettuce, mustard, onion, radish, beets and leeks.

Will one night of frost kill my plants?

A light frost may cause minimal damage while a severe frost may kill plants. Young, vulnerable plants are much more susceptible to a light freeze, which occurs when temperatures are 29 to 32 degrees Fahrenheit, while mature plants may only suffer from short-term effects.

Why is my lettuce growing tall?

Most lettuce varieties are cool season crops. When the hot weather comes, they send up tall stalks that will flower and set seed. You’ll notice that the leaves begin to taste bitter around the same time the stalks elongate. This is called bolting.