Flower Trivia
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208 free Flower trivia questions with answers — nature quiz, new questions added Oct 2026.
50 free Flower trivia questions with answers. Flowers are where botany, history and art collide. A single tulip bulb once sold for the price of a canal house, the world's largest bloom is a parasite with no leaves or roots, and the seeds in a sunflower head line up in Fibonacci spirals. This quiz covers all of it: famous species like the rose, orchid, lotus and titan arum, national and state flowers, record-breakers, floral festivals from Pasadena to Chelsea, and the Victorian code of floriography. There is a friendly run of easy questions for kids and casual players (which country gave Washington its cherry trees, what dandelion means in French) alongside genuinely hard ones about tulip viruses, beetle-pollinated magnolias and the 12-year-old who cracked vanilla pollination. Sunflower fans get a dedicated cluster of questions too, so it doubles as a sunflower trivia round. Every answer was checked against a primary source, mostly Wikipedia's species articles, Guinness World Records and official pages, and each question carries its citation, so you can settle arguments at the table with confidence.
30 of 208 questions with answers and explanations. Play the quiz
Q 01What is the big yellow "flower" of a sunflower, botanically speaking?
A cluster of tiny florets
A cluster of tiny florets: each 'petal' is a sterile ray floret and every seed grows from its own small floret in the centre, so one sunflower head is really a whole crowd of flowers.
Q 02Mature sunflower heads lock in place facing which direction?
East
Mature heads stop tracking the sun and lock facing east: the sunrise warms them quickly, and a 2016 study found that the eastward heads drew more visits from pollinators.
Q 03The sunflower is the national flower of which country?
Ukraine
Ukraine: sunflowers spread across Ukraine and Russia after the Orthodox Church left their oil off its list of foods banned in Lent, and by 2020 the two countries grew over half of the world's crop.
Q 04Which US state has the sunflower as its official state flower?
Kansas
Kansas chose the wild sunflower in 1903, eight years after a state law had called it a noxious weed to be destroyed; the senator behind the bill took the idea from Kansans wearing it as a badge at a Colorado rodeo.
Q 05Botanically, a sunflower 'seed' still in its striped shell is which part of the plant?
A dry fruit
A dry fruit: the striped shell is the fruit wall and only the kernel inside is the true seed; botanists call this one-seeded fruit of the daisy family a cypsela.
Q 06Sunflower spiral counts like 34 and 55, or 89 and 144, are consecutive numbers from which sequence?
Fibonacci
Those are consecutive Fibonacci numbers: each floret sits about 137.5 degrees, the golden angle, round from the last, which packs seeds tightly and yields Fibonacci spiral counts.
Q 07Van Gogh painted his Arles sunflower still lifes in 1888 to decorate a bedroom for which fellow painter?
Paul Gauguin
Paul Gauguin was so taken with them that he later asked for one, which Van Gogh was reluctant to give; during his stay in the Yellow House he also painted Van Gogh at work on a sunflower canvas.
Q 08After the Chernobyl disaster, sunflowers were floated on a nearby pond for what purpose?
To soak up radioactive metals
To soak up radioactive metals: roots trailing in the water drew out caesium-137 and strontium-90, a clean-up method called rhizofiltration, and sunflowers were planted again after the Fukushima accident.
Q 09Rafflesia arnoldii, the largest single flower on Earth at up to a metre across, grows in the rainforests of which two islands?
Sumatra and Borneo
Sumatra and Borneo host a bloom that smells of rotting meat, which is exactly what its fly pollinators are looking for.
Q 10With no leaves, stems or roots of its own, how does Rafflesia survive?
As a parasite inside Tetrastigma vines
As a parasite inside Tetrastigma vines: Rafflesia has no chlorophyll either, so it takes everything it needs from its host and shows itself only when a bud swells out of the vine to bloom.
Q 11Rafflesia arnoldii shares which grim nickname with the unrelated titan arum?
Corpse flower
Corpse flower: both blooms reek of rotting meat to draw the carrion insects that pollinate them, yet the two plants are not related, and a single Rafflesia flower can be a metre across.
Q 12Who presented the 1995 TV series for which the name 'titan arum' was reportedly coined?
David Attenborough
David Attenborough is said to have coined 'titan arum' while filming The Private Life of Plants, because the Latin name Amorphophallus, 'misshapen phallus', was thought too rude for television.
Q 13What does a blooming titan arum's spadix do to spread its rotting-flesh smell?
Q 21Botanically, the sharp growths on a rose stem are not true thorns but what?
Prickles
Prickles: true thorns are modified stems and spines are modified leaves, but a rose's prickles are only outgrowths of the skin with no veins inside, which is why they snap off so cleanly.
Q 22Rose hips, especially from the dog rose, are among the richest plant sources of which nutrient?
Vitamin C
Vitamin C is so plentiful in rose hips, the fruit left after the petals fall, that they were traditionally boiled into a syrup to top up levels of it, while the irritant hairs inside were turned into itching powder.
Q 23Which US president proclaimed the rose the national floral emblem in the 1980s?
Ronald Reagan
Heats up to body temperature
Heats up to body temperature: the warmth, about 37 °C, turns the stench to vapour and lifts it on rising air, and it helps fool carrion insects into treating the bloom as a dead animal.
Q 14Dutch tulip mania is often called history's first recorded what?
Speculative bubble
Speculative bubble: at the peak in early 1637 a single prized bulb could cost as much as a house, and then the market collapsed almost overnight.
Q 15What caused the prized flame-like streaks on tulip mania's most coveted tulips?
A virus infecting the bulbs
A virus infecting the bulbs, the tulip breaking virus, made the petals flame with colour but left each generation weaker, so the most valuable 'broken' lines were slowly dying out.
Q 16The word "tulip" comes ultimately from a word for which item of clothing?
A turban
A turban: the name reached Europe from the Turkish tülbent, and it seems to have stuck because a fully opened bloom was thought to look like the headwear.
Q 17What is the Victorian-era practice of sending coded messages through flowers called?
Floriography
Floriography let Victorians say with a bouquet what could not be spoken aloud: armed with flower dictionaries, they exchanged small 'talking bouquets' for the receiver to decode.
Q 18Which poet and letter-writer brought the flower-language craze to England from Constantinople in 1718?
Mary Wortley Montagu
Lady Mary Wortley Montagu described the Ottoman 'selam' of coded flowers in her Turkish Embassy Letters; she is better remembered for bringing smallpox inoculation home from the same trip.
Q 19In the modern language of flowers, a yellow rose stands for what?
Friendship
Friendship is the modern reading of a yellow rose, a turnaround from Victorian flower dictionaries, which listed it under jealousy and fading love; deep red still means romantic love.
Q 20In which Shakespeare play does Ophelia hand out rosemary, fennel and rue?
Hamlet
In Hamlet (Act 4, Scene 5) Ophelia hands out rosemary 'for remembrance', fennel and rue, and regrets she has no violets, which withered when her father died.
Ronald Reagan's proclamation, made at the request of Congress, argued that George Washington himself bred roses and named one after his mother, and that the White House boasts a Rose Garden.
Q 24In the Wars of the Roses, the white rose was the badge of which royal house?
York
The white rose was the badge of the House of York; the Tudor rose, red outside and white inside, was invented afterwards to show York and Lancaster united.
Q 25In the wild, dust-like orchid seeds cannot germinate without the help of what?
Fungus
Fungus: an orchid seed carries virtually no food store of its own, so a fungal partner must feed it until the seedling can grow, a dependence found in almost every orchid.
Q 26The word "orchid" comes from the Ancient Greek for which part of the body?
Testicle
Orchis is Greek for testicle: the paired underground tubers of the original Orchis species suggested the comparison to early botanists.
Q 27Enslaved 12-year-old Edmond Albius of Réunion invented the hand-pollination method still used for which crop?
Vanilla
Albius's 1841 trick with a thin stick and a thumb let vanilla orchids be pollinated by hand far outside their Mexican range, yet he died in poverty in 1880.
Q 28The bee orchid mimics a bee's look and scent to make a visiting bee do what?
Attempt to mate with it
Attempt to mate with it: a male bee picks up pollen while trying, yet in the north of the orchid's range the trick is rarely needed, because the flowers almost always pollinate themselves.
Q 29The sacred lotus, Nelumbo nucifera, is the national flower of which country?
India
India: the sacred lotus owes its name to its standing in Hinduism and Buddhism, where the flower symbolises enlightenment and spiritual awakening and is carved and painted throughout temple art.
Q 30Roughly how old was the sacred lotus seed from a dry Chinese lakebed that sprouted in the 1990s?
About 1,300 years
About 1,300 years: carbon dating made it the oldest seed of its kind ever germinated, and biologists now study how such seeds repair centuries of damage before sprouting for clues to ageing.