170 free Flower trivia questions with answers — nature quiz, new questions added Aug 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 170 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
Facing the sunrise warms the head quickly in the morning, and warmer heads get noticeably more pollinator visits.
Q 03The sunflower is the national flower of which country?
Ukraine
It is also one of the world's biggest sunflower-seed producers, sharing the top spot with Russia.
Q 04Which US state has the sunflower as its official state flower?
Kansas
The wild plant is native across the central and western United States, so the prairie state's choice was a local one.
Q 05The tallest sunflower ever recorded reached roughly what height?
10.9 m (35 ft 9 in)
Guinness measured Alex Babich's record-breaker in Fort Wayne in September 2025, and it stood nearly four times the height of a typical plant.
Q 06Sunflower spiral counts like 34 and 55, or 89 and 144, are consecutive numbers from which sequence?
Fibonacci
Each floret sits about 137.5 degrees round from the last, the golden angle, which packs seeds as tightly as possible.
Q 07Van Gogh painted his Arles sunflower still lifes in 1888 to decorate a bedroom for which fellow painter?
Paul Gauguin
An earlier Paris series from 1887 shows the flowers lying cut on the ground; the vase versions came a year later.
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, is native to which two islands?
Sumatra and Borneo
The bloom can be a metre across and 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 bloom is around a metre wide, and it 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
Amorphophallus is Greek for 'misshapen phallus', which is a fair description of the plant's giant spadix.
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
The hips are the fruit left behind after the petals fall, and rugosa roses produce them almost as richly.
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
At the peak, a single bulb of the prized Semper Augustus reportedly changed hands for 10,000 guilders.
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
Europeans thought the flower's shape resembled the headwear, and the name stuck as bulbs travelled west from the Ottoman court.
Q 17What is the Victorian-era practice of sending coded messages through flowers called?
Floriography
The fad spread across 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
She is better remembered for bringing smallpox inoculation back from the same trip.
Q 19In the traditional language of flowers, a yellow rose stands for what?
Friendship
Deep red means romantic love and white means virtue and chastity.
Q 20In which Shakespeare play does Ophelia hand out rosemary, fennel and rue?
Hamlet
She regrets she has no violets to give, saying they all withered when her father died.
Q 24In the Wars of the Roses, the white rose was the badge of which royal house?
York
The Tudor rose, red outside and white inside, was invented afterwards to show the two houses united.
Q 25Roughly how many accepted species does the orchid family contain?
28,000
They grow on every continent except Antarctica, and 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
The twin 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
His trick with a thin stick and a thumb made the crop growable far outside its native range, but 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
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
The lotus is also a rare warm-blooded flower: its blooms hold themselves at 30–35 °C even on cold mornings.