Lettuce definition is - any of a genus (Lactuca) of composite plants; especially : a common garden vegetable (L. sativa) whose succulent leaves are used especially in salads. (uncountable) The leaves of the lettuce plant, eaten as a vegetable; as a dish often mixed with other ingredients, dressing etc. Year over year, worldwide sales of exported lettuce increased by 2.7% from 2018 to 2019. The outbreak was traced to romaine lettuce grown in the Yuma region of Arizona. CDC laboratory testing identified the outbreak strain of E. coli O157:H7 in canal water samples taken from the Yuma growing region. Corrections? Clean lettuce before storing. Most lettuce leaves taste bitter. About Lettuce. I’ll have a ham sandwich with lettuce and tomato. Will frost damage lettuce plants? Lettuce (Lactuca sativa) – a reliable summer favourite, salad filler and sandwich staple!But it can be grown year round, with very little tender loving care after making sure that there is adequate feed. Cut bottom core off and thoroughly wash leaves under cold water. For successful cultivation, lettuce requires ample water, especially in warmer weather. Radicchio comes in two main varieties, the small cabbage-like Chioggia and oblong Treviso. This crop prefers a loamy soil with a high organic matter content. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Where is the line between fruit and vegetable really drawn? Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on WhatsApp (Opens in new window), Click to email this to a friend (Opens in new window), Spain: US$897.2 million (30.7% of total lettuce exports), Spain: US$864.8 million (net export surplus up 16% since 2015), United States: $149.8 million (down -42.2%), Canada: -US$391.7 million (net export deficit down -2.3% since 2015), United Kingdom: -$200.3 million (down -13.9%), Partners for Import Export Trading Agencies & General Supplies (Egypt), Yunnan Chuntian Agricultural Products (China). After the produce is precooled, it is desirable to maintain low temperature by shipping in refrigerator cars or trucks, by storing in cold-storage rooms, and by…. Because lettuce seeds are so small, it is important to remember that you’ll need to go back over the grow area when germination has occurred in order to thin it out. It is easily cultivated, and it requires low temperatures keep from flowering. …a leaf, such as cabbage, lettuce, parsley, spinach, and chive; an immature flower, such as cauliflower, broccoli, and artichoke; a seed, such as pea and lima bean; the immature fruit, such as eggplant,…, and sweet corn (maize); cabbage, lettuce, and spinach are suited to vacuum cooling; air cooling is preferred for bean, cucumber, eggplant, pepper, and tomato. Articles from Britannica Encyclopedias for elementary and high school students. Quick to germinate and mature, you can harvest leaves as soon as they’re large enough and go back for more as needed. Nothing tastes better than crisp lettuce straight from the garden. Most likely, your bitter lettuce is the result of the maturation process. Mulch your lettuce to keep the roots cool and fool the plant into thinking its still spring. After you have planted the lettuce seeds, you’ll need to fill the pot the rest of the way with potting soil. Lettuce was eaten by the ancient kings of Persia (that makes it about 2,500 years old). Lettuce varieties are selected for specific planting periods and disease resistance. The UPC number on the lettuce is 0-27918-20314-9. Let us know if you have suggestions to improve this article (requires login). Lettuce nutrition profle: Calories-15, vitamin A- 7405 IU (247% DV), vitamin C- 9.2 mg (15% DV). Lettuce, for example, is a vegetable which contains a little protein, but also enzymes that make protein synthesis more efficient. In 2013, 24.9 million tons of lettuce were produced in the world. The scenario changed since the late 1900’s when the crop began to be cultivated in large-scale in other parts of the world. It begins producing seeds and acquires a bitter taste. How to find out where your romaine lettuce comes from According to the CDC so far there has been 98 cases of E. coli across 22 states. While the bitter temperature outside is hostile to every green thing, the warm temperature inside our home is welcoming to them. When it bolts, or goes to seed, the flower stalks are 2 to 3 feet tall, with small, yellowish flowers on the stalk. Rinse by holding head cored-end under running tap water allowing water to run all through the head to refresh it. This makes sense, since plants have been stressed during harvest and transplant, and provided with a limited quantity of nutrients, without an adequate root structure to feed the plant. Turn the lettuce head over and let the water run out. Lettuce starts to "bolt" in hot conditions toward the end of the growing season. Omissions? What Is Lettuce? Smaller percentages came from Africa (0.8%), Oceania (0.3%) mostly Australia, then Latin America (also 0.3%) excluding Mexico but including the Caribbean. Diff… Share your feedback of your local Sainsbury's store at Lettuce Know. SINGAPORE — The Agri-Food & Veterinary Authority of Singapore (AVA) has issued a recall for iceberg lettuce after it detected high levels of pesticide in the vegetable imported from a Malaysian farm Lettuces are the most popular of all the salad leaves. Originally, the countries of North America and Western Europe ranked the highest in lettuce production in the world. Where to Plant Lettuce; The ideal lettuce growing location for spring and fall is in a spot that receives full sun. In many parts of the world, the cos, leaf, and butterhead types are most popular, though some varieties are difficult to ship and are commonly grown on truck farms or market gardens relatively close to markets. , while the leaves of some kinds grow more loosely half an inch of water taste... 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