Lettuce Plant Cold Tolerance

In the tropics you can only grow lettuce during the cooler months. But I come from a cooler climate originally.

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Cold-tolerant lettuce and the rest.

Lettuce plant cold tolerance. We had extremely cold weather at New Year -3F on Jan 2 and Jan 3 followed by -8F on Jan 6 and -9F on Jan 7. However the underlying mechanisms are complex and not well understood. Lettuce is considered hard frost hardy which means it can withstand frosts below 28 degrees.

When To Plant Frost Tolerant Vegetables. Good survival of Green Forest and Revolution lettuce sown September 24 in our hoophouse after the Big Freeze on January 10. Previous studies have reported that low temperature LT constrains plant growth and restricts productivity in temperate regions.

In general a frost 31-33 degrees F will kill beans cantaloupe corn cucumbers eggplant okra peas pepper potatoes sweet potatoes squash tomatoes and watermelon. Digging compost into our cold frames in preparation for fall planting. Niki Jabbour who grows vegetables and fruits year-round at her home in Nova Scotia offers these suggestions for cold-tolerant greens to grow in fall and winter.

Lettuce is a cool-season vegetable that thrives in the lower temperatures of spring and fall. Growing Lettuce Lactuca Sativa How To Grow Lettuce In Warm Weather. Lettuce can survive an occasional dip to 10F 12C with good rowcover outdoors but not 8F 13C as Ive seen.

Frost tolerant plants can often be treated very similarly to cold hardy plants. Plant a few seeds every week and youll have a constant crop for fresh salads. Well as long as it is cool enough.

Unfortunately lettuce is NOT a tropical plant. Adolescent lettuce are more cold-hardy than full-sized plants. Although it can withstand hard frosts if the root freezes the plant thaws into a.

We keep a list of lettuce varieties for each season. Temperatures over 70 degrees. In molecular terms researchers prioritize research into the.

Some grow quickly and produce a crop for the fall even without the need for any special winter protection. Growing lettuce is relatively easy. Many varieties of lettuce will grow well into fall even with cooler temperatures.

Tatsoi is one cold-tolerant green that can be grown in fall and winter vegetable gardens. Half-grown lettuces are more cold-hardy than full-sized plants. One of the vegetable gardens most versatile plants lettuce comes in an amazing array of colors shapes and flavors.

Small and medium-sized plants of Marvel of Four Seasons Rouge dHiver Winter Density and Tango can take 15. As with cold hardy plants we recommend bringing young plants inside or in a greenhouse in the event of a dip into freezing temperatures. Planting lettuce in a shady spot in the summer months keeps the plant cool so you can harvest into the hot months.

Seedlings can germinate in temperatures as low as 40 4 C but germination gets spotty in temperatures over 75 24 C. Up until around August you can still sow a wide range of lettuces. Colder temperatures 26-31 degrees F may burn foliage but will not kill broccoli cabbage cauliflower chard lettuce mustard onion radish and turnip.

Lettuce does NOT like hot weather. 4 rows Lettuce grows best at temperatures of 55 to 65 degrees Fahrenheit. Meaning they can be placed outside when temperatures are consistently above freezing and preferably somewhat above it.

Over the past ten years research on the process of adaptation and tolerance of plants during cold stress has been carried out. Overexpression of Arabidopsis ABF3 gene enhances tolerance to droughtand cold in transgenic lettuce Lactuca sativa. A brief frost is unlikely to hurt romaine or any lettuce unless it becomes an extended event.

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