Lettuce
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40 free Lettuce trivia questions with answers — trivia quiz, new questions added Oct 2026.
Lettuce looks like the least eventful thing on the plate, which is exactly why its story surprises people. It has been worshipped, prescribed as medicine, blamed for sleepiness, carried across oceans, grown in orbit and even drawn into a political drama that made headlines around the world. This quiz collects the best fun facts about lettuce in one place. It covers where the plant was first grown and how it got its name, the main types found in a supermarket and the famous dishes built on them, and the science of why a crisp leaf behaves the way it does. Further questions follow lettuce into ancient festivals, children's stories, farm history, fast food and everyday speech. It suits a food-themed quiz night, a classroom lesson on plants, a gardening club, or anyone who wants a good fun fact to share over lunch. Every answer comes with a short explanation.
30 of 40 questions with answers and explanations. Play the quiz
Q 01Which British prime minister was outlasted in office by a lettuce on a Daily Star livestream in 2022?
Liz Truss
Liz Truss served 49 days, the shortest term of any British prime minister, and announced her resignation while the lettuce beside her photograph had still not wilted.
Q 02Which starving marine mammals were fed 3,000 pounds of lettuce a day in Florida after their seagrass died off?
Manatees
Manatees graze on seagrass, and when the beds died back in 2021 a record 1,100 or so of the animals died in Florida, many of them from starvation.
Q 03Which NASA astronaut ate red lettuce grown aboard the International Space Station during his year in orbit in 2015?
Scott Kelly
Scott Kelly and two crewmates tasted the leaves plain first, then dressed them with olive oil and balsamic vinegar.
Q 04Caesar salad, built on romaine lettuce, is credited to an Italian-born restaurateur working in 1924 in which country?
Mexico
Mexico's border city of Tijuana was home to Caesar Cardini's restaurant, which drew American diners escaping Prohibition; by his daughter's account, a holiday rush in 1924 inspired the dish.
Q 05In which author's 1909 tale do the Flopsy Bunnies fall asleep after feasting on overgrown lettuces?
Beatrix Potter
Beatrix Potter turned the nap into the plot: the gardener McGregor finds the dozing bunnies on his rubbish heap and ties them in a sack.
Q 06Lactucarium, the dried sap of wild lettuce, was studied in the 1800s as a less addictive alternative to which drug?
Opium
Opium and lactucarium even look alike, since both ooze out as a white fluid that dries to a thick solid, and the lettuce version went into cough lozenges and sleeping syrups.
Q 07Which Brothers Grimm heroine shares her name with a German word for the salad leaf called lamb's lettuce?
Rapunzel
Rapunzel is a regional German name for lamb's lettuce, which is no true lettuce: Thomas Jefferson grew it at Monticello under its French name, mâche.
Q 08At Lunar New Year, which costumed dancing animal plucks a hanging lettuce, chews it and spits it out for luck?
Lion
Lion dancers call the custom plucking the greens: the lettuce hangs outside a shop or home with a red envelope for the troupe, and the leaves the animal spits out are a good omen.
Q 09Which dense, pale-headed lettuce made up about 95 percent of the lettuce grown and eaten in the US after the 1940s?
Iceberg
Iceberg is often said to be named for the crushed ice it was shipped in, though the seed firm Burpee launched it in 1894 and credits its pale, crisp heads instead.
Q 10The Romans called lettuce lactuca, after the white sap in its cut stalks, borrowing their word for what?
Milk
Milk in Latin is lac, and lactuca passed through Old French laitues to become the English word lettuce.
Q 11Lettuce cannot be successfully frozen, canned or dried because almost 95 percent of each leaf is made of what?
Water
Water makes up 94.9 percent of a lettuce, which defeats every method of preserving it, so the whole crop has to be eaten fresh.
Q 12Which ancient civilization left the earliest known pictures of lettuce being grown, dating from about 2680 BC?
Egypt
Egypt held lettuce sacred to Min, its god of reproduction: the plant was carried in his festivals and set beside his images.
Q 13Which explorer is credited with first bringing lettuce from Europe to the Americas in the late 15th century?
Christopher Columbus
Christopher Columbus took it west, and within a century a German botanist could describe the three basic kinds still grown today: head, loose-leaf and romaine.
Q 21Which California city, the hometown of novelist John Steinbeck, is nicknamed the Salad Bowl of the World?
Salinas
Salinas lies in a valley where lettuce, strawberries, tomatoes and spinach are the dominant crops, a landscape Steinbeck used as the setting of East of Eden.
Q 22Cos lettuce takes its name from Kos, an island that was an early source of its seeds, in which country?
Greece
Greece's island of Kos was a centre of lettuce farming in the Byzantine period, and the first seeds of the tall, upright type to reach the rest of Europe came from there.
Q 23Which US state's Yuma County grows about 90 percent of the country's leafy vegetables between November and March?
Arizona
Arizona's Yuma is known as the Winter Lettuce Capital of the World, and Guinness World Records lists it as the sunniest city on Earth.
Q 14Which country grew 53 percent of the world's 28 million tonnes of lettuce and chicory in 2023?
China
China was a latecomer to lettuce, which arrived from the west during the first millennium AD, and nobody is sure how the plant first got there.
Q 15Lettuce belongs to the Asteraceae, a family that botanists also name after the aster and which tall garden flower?
Sunflower
Sunflower, daisy and aster all lend their names to the family, which has more than 32,000 known species and is rivalled in size only by the orchids.
Q 16Ssam, a mouthful of meat such as pork wrapped in a fresh lettuce leaf, belongs to the cuisine of which country?
Korea
Korea's leaf wraps go back centuries: a Chinese poet of the Yuan era wrote that the people of Goryeo ate rice wrapped in raw greens, and praised the scent of their lettuce.
Q 17At which Jewish festival meal is romaine lettuce commonly eaten as maror, the bitter herb?
Passover
Passover's bitter herb stands for the bitterness of slavery, and lettuce is the first of the five plants that the Mishnah names for it.
Q 18Sea lettuce, eaten raw in salads and cooked in soups from Ireland to Japan, is which kind of organism?
Seaweed
Seaweed of the genus Ulva grows along coasts all over the world, and in Japan it is eaten under the name aosa.
Q 19Which burger chain's Protein Style order, introduced in the 1970s, swaps the bun for large lettuce leaves?
In-N-Out
In-N-Out keeps the lettuce-wrapped burger on its unadvertised secret menu, and Health magazine once rated it the best low-carb sandwich in the United States.
Q 20In American slang, lettuce is a nickname for which everyday thing, also known as cabbage?
Money
Money is the meaning, and dictionaries narrow the slang sense of lettuce to paper money, the folding kind.
Q 24Which union leader was jailed in December 1970 during a lettuce strike and boycott in California?
Cesar Chavez
Cesar Chavez had never been in jail before; Ethel Kennedy visited him there, and the dispute grew into the largest farm worker strike in US history.
Q 25Which 1980s McDonald's burger came in a two-sided box that kept its lettuce cool and its beef hot?
McDLT
McDLT was short for McDonald's Lettuce and Tomato: buyers put the two halves together themselves, but the bulky foam box drew environmental complaints and the burger was dropped in 1991.
Q 26Miner's lettuce is named after California Gold Rush miners, who ate the wild plant to ward off which disease?
Scurvy
Scurvy comes from a lack of vitamin C, and the plant's fresh leaves supplied it when miners had few other greens to eat.
Q 27The frilly lettuce sea slug of the Caribbean gains solar energy by keeping which parts of the algae it eats?
Chloroplasts
Chloroplasts taken from its food go on making sugars from sunlight inside the slug's frilly back, which is why its relatives are nicknamed solar-powered sea slugs.
Q 28Lettuce leaves have been used commercially to make tobacco-free versions of which product?
Cigarettes
Cigarettes made from lettuce have been sold as a tobacco-free smoke, though the leaves of the plant's wild relatives look far more like tobacco than the garden kind does.
Q 29Celtuce, a lettuce popular in Asian cooking and also called asparagus lettuce, is grown mainly for which part?
Its stem
Its stem is the thick part that is eaten, raw or cooked, and it is ready to cut once the plant stands about 30 centimetres tall.
Q 30What do gardeners call it when lettuce, prompted by hot weather, sends up a flower stalk and turns bitter?
Bolting
Bolting makes lettuce unsaleable, so centuries of breeding have favoured plants that delay it, and growers in hot places shade their crops to slow it down.