Flower Trivia
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214 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 214 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
Each 'petal' is a sterile ray floret and every seed in the centre comes from its own disc floret, so one head is really hundreds of flowers.
Q 02Mature sunflower heads lock in place facing which direction?
East
Mature heads lock facing east: the sunrise warms them quickly, and a 2016 study found east-facing heads drew far more pollinator visits than heads turned to face west.
Q 03The sunflower is the national flower of which country?
Ukraine
The sunflower is Ukraine's national flower; Ukraine and Russia together grow roughly half of the world's sunflower seeds.
Q 04Which US state has the sunflower as its official state flower?
Kansas
Kansas adopted the wild native sunflower as its state flower in 1903 and is nicknamed the Sunflower State.
Q 05Botanically, what kind of fruit is a single sunflower 'seed' in its striped shell?
Achene
A sunflower 'seed' is an achene, a dry one-seeded fruit whose hard shell is the fruit wall; the edible kernel inside is the true seed.
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
Van Gogh painted the Arles vase sunflowers in August 1888 to decorate the Yellow House room for Paul Gauguin, who arrived that October; an earlier 1887 Paris series shows cut flowers on the ground.
Q 08After the Chernobyl disaster, sunflowers were floated on a contaminated pond for what purpose?
To pull radioactive metals out of the water
The technique is called phytoremediation, and the same plant has been used to soak up lead from polluted soils.
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 10Rafflesia has no leaves, stems or roots of its own. How does it survive?
As a parasite inside Tetrastigma vines
It has no chlorophyll either, so it steals everything it needs from the vine and only shows itself when a bud bursts out to bloom.
Q 11A single Rafflesia arnoldii bloom can weigh up to roughly how much?
11 kg (24 lb)
The heaviest Rafflesia arnoldii blooms reach about 11 kg (24 lb); the metre-wide flower lasts only a few days before collapsing into a black slimy mess.
Q 12Who presented the 1995 TV series for which the name 'titan arum' was reportedly coined?
David Attenborough
David Attenborough coined 'titan arum' for The Private Life of Plants (1995), judging the Latin Amorphophallus titanum, 'giant misshapen phallus', unfit to say on air.
Q 13What unusual thing does a blooming titan arum's spadix do to spread its rotting-flesh smell?
It heats up to body temperature
Q 21Botanically speaking, the sharp growths on a rose stem are not thorns. What are they?
Prickles
True thorns are modified stems; these are just outgrowths of the skin, 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
Rose hips, the fruit left after the petals fall, are packed with vitamin C; Britain gathered dog rose hips for syrup in the Second World War when citrus was scarce.
Q 23Which US president signed the 1986 legislation making the rose the national floral emblem?
Ronald Reagan
More than a century of lobbying preceded it; the rose had been proposed as the national flower repeatedly since the 1800s.
The warmth helps volatilise the stench and draws in carrion insects looking for a corpse to lay their eggs in.
Q 14Dutch tulip mania collapsed dramatically in February of which year?
1637
Prices collapsed in February 1637; at the peak a single bulb of the prized Semper Augustus reportedly changed hands for 10,000 guilders, the cost of a grand Amsterdam canal house.
Q 15What caused the prized flame-like streaks on tulip mania's most coveted tulips?
A virus infecting the bulbs
The tulip breaking virus weakened the bulbs even as it made them beautiful, so the most valuable lines were slowly dying.
Q 16The word "tulip" comes ultimately from a Persian word for which item of clothing?
A turban
Tulip comes via Turkish tulbend from Persian dulband, 'turban': Europeans thought the bloom resembled the headwear, and the name travelled west with bulbs from the Ottoman court.
Q 17What is the Victorian-era practice of sending coded messages through flowers called?
Floriography
Floriography, the language of flowers, swept England, France and North America in the 19th century, complete with dictionaries listing each bloom's meaning.
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
Today a yellow rose means friendship and joy, though Victorian dictionaries read it as jealousy; deep red means romantic love and white means purity.
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.
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 25Roughly how many accepted species does the orchid family contain?
28,000
Orchidaceae holds roughly 28,000 accepted species, growing on every continent except Antarctica; their dust-like seeds cannot germinate without a fungal partner.
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's lip looks and smells like a female bee. What is the flower trying to get a male bee to do?
Attempt to mate with it
In the north of its range the trick rarely works, so British bee orchids mostly just pollinate themselves.
Q 29The sacred lotus, Nelumbo nucifera, is the national flower of which country?
India
India adopted the sacred lotus as its national flower; it is also the unofficial flower of Vietnam and is sacred in both Hinduism and Buddhism.
Q 30Roughly how old was the sacred lotus seed from a Chinese lakebed that germinated in 1994?
About 1,300 years
Jane Shen-Miller germinated a seed radiocarbon-dated to about 1,300 years old from a dry lakebed in Liaoning; the lotus also holds its blooms at 30–35 °C on cold mornings.