170 Fun Facts About Flower

What is the big yellow "flower" of a sunflower, botanically speaking?

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.

Mature sunflower heads lock in place facing which direction?

Facing the sunrise warms the head quickly in the morning, and warmer heads get noticeably more pollinator visits.

The sunflower is the national flower of which country?

It is also one of the world's biggest sunflower-seed producers, sharing the top spot with Russia.

Which US state has the sunflower as its official state flower?

The wild plant is native across the central and western United States, so the prairie state's choice was a local one.

The tallest sunflower ever recorded reached roughly what height?

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.

Sunflower spiral counts like 34 and 55, or 89 and 144, are consecutive numbers from which sequence?

Each floret sits about 137.5 degrees round from the last, the golden angle, which packs seeds as tightly as possible.

Van Gogh painted his Arles sunflower still lifes in 1888 to decorate a bedroom for which fellow painter?

An earlier Paris series from 1887 shows the flowers lying cut on the ground; the vase versions came a year later.

After the Chernobyl disaster, sunflowers were floated on a contaminated pond for what purpose?

The technique is called phytoremediation, and the same plant has been used to soak up lead from polluted soils.

Rafflesia arnoldii, the largest single flower on Earth, is native to which two islands?

The bloom can be a metre across and smells of rotting meat, which is exactly what its fly pollinators are looking for.

Rafflesia has no leaves, stems or roots of its own. How does it survive?

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.

A single Rafflesia arnoldii bloom can weigh up to roughly how much?

The bloom is around a metre wide, and it lasts only a few days before collapsing into a black slimy mess.

Who presented the 1995 TV series for which the name 'titan arum' was reportedly coined?

Amorphophallus is Greek for 'misshapen phallus', which is a fair description of the plant's giant spadix.

What unusual thing does a blooming titan arum's spadix do to spread its rotting-flesh smell?

The warmth helps volatilise the stench and draws in carrion insects looking for a corpse to lay their eggs in.

Dutch tulip mania collapsed dramatically in February of which year?

At the peak, a single bulb of the prized Semper Augustus reportedly changed hands for 10,000 guilders.

What caused the prized flame-like streaks on tulip mania's most coveted tulips?

The tulip breaking virus weakened the bulbs even as it made them beautiful, so the most valuable lines were slowly dying.

The word "tulip" comes ultimately from a Persian word for which item of clothing?

Europeans thought the flower's shape resembled the headwear, and the name stuck as bulbs travelled west from the Ottoman court.

What is the Victorian-era practice of sending coded messages through flowers called?

The fad spread across England, France and North America in the 19th century, complete with dictionaries listing each bloom's meaning.

Which poet and letter-writer brought the flower-language craze to England from Constantinople in 1718?

She is better remembered for bringing smallpox inoculation back from the same trip.

In the traditional language of flowers, a yellow rose stands for what?

Deep red means romantic love and white means virtue and chastity.

In which Shakespeare play does Ophelia hand out rosemary, fennel and rue?

She regrets she has no violets to give, saying they all withered when her father died.

Botanically speaking, the sharp growths on a rose stem are not thorns. What are they?

True thorns are modified stems; these are just outgrowths of the skin, which is why they snap off so cleanly.

Rose hips, especially from the dog rose, are among the richest plant sources of which nutrient?

The hips are the fruit left behind after the petals fall, and rugosa roses produce them almost as richly.

Which US president signed the 1986 legislation making the rose the national floral emblem?

More than a century of lobbying preceded it; the rose had been proposed as the national flower repeatedly since the 1800s.

In the Wars of the Roses, the white rose was the badge of which royal house?

The Tudor rose, red outside and white inside, was invented afterwards to show the two houses united.

Roughly how many accepted species does the orchid family contain?

They grow on every continent except Antarctica, and their dust-like seeds cannot germinate without a fungal partner.

The word "orchid" comes from the Ancient Greek for which part of the body?

The twin underground tubers of the original Orchis species suggested the comparison to early botanists.

Enslaved 12-year-old Edmond Albius of Réunion invented the hand-pollination method still used for which crop?

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.

The bee orchid's lip looks and smells like a female bee. What is the flower trying to get a male bee to do?

In the north of its range the trick rarely works, so British bee orchids mostly just pollinate themselves.

The sacred lotus, Nelumbo nucifera, is the national flower of which country?

It is also the unofficial flower of Vietnam and is sacred in both Hinduism and Buddhism.

Roughly how old was the sacred lotus seed from a Chinese lakebed that germinated in 1994?

The lotus is also a rare warm-blooded flower: its blooms hold themselves at 30–35 °C even on cold mornings.

What do engineers call the self-cleaning trick of Nelumbo nucifera leaves, copied in paints?

A waxy, microscopically bumpy surface makes the leaf superhydrophobic, so droplets sit almost as perfect spheres.

Saffron, the world's most expensive spice, is made from the dried stigmas of which flower?

Each bloom gives just three crimson threads, and it takes about 150,000 flowers to produce a single kilogram.

Which country grows roughly 90 percent of the world's saffron?

One freshly picked bloom yields only about 7 milligrams of dried spice, which is why premium saffron tops US$5,000 a kilo.

Japan's centuries-old custom of picnicking and partying under blooming cherry trees is called what?

The favourite cultivar, Somei-yoshino, blooms and drops its petals within about a week, which is part of the appeal.

Which flower symbolises Japan's Emperor and gives the imperial seat its nickname, the "___ Throne"?

In France, Italy and Poland the same flower means the opposite of celebration: it is reserved for funerals and graves.

The king protea, with a flower head that can be 30 cm across, is the national flower of which country?

The country's national cricket team is nicknamed the Proteas after it.

The blue poppy is the national flower of which Himalayan kingdom?

Its neighbour Nepal chose the tree rhododendron instead.

The daffodil is the national flower of which part of the United Kingdom?

It shares the job with the leek, and both are worn on St David's Day, 1 March.

Bluebonnets are the state flower of which US state, where a persistent myth says picking them is illegal?

There is no such law; Lady Bird Johnson simply encouraged planting them along highways, and the roadside displays became iconic.

Ohio's state flower, the red carnation, honours which assassinated president who always wore one?

The same flower gave its name to Portugal's 1974 Carnation Revolution, when the flower became the emblem of the near-bloodless coup.

Hydrangea blooms act as a natural pH indicator. In alkaline soil, what colour do they usually turn?

Alkaline soil locks away aluminium ions; acid soil frees them, the plant absorbs them, and the very same bush flowers a different colour.

Poppies became a remembrance symbol after growing over soldiers' graves in which Belgian region in WWI?

The image comes from John McCrae's 1915 poem, and an American teacher, Moina Michael, first proposed wearing the flower in 1918.

Every float in Pasadena's New Year's Day Rose Parade must be entirely covered with what?

Seeds, bark and leaves all count, but artificial flowers and dyed materials are banned outright.

What does the name of the alpine flower edelweiss literally mean in German?

The white 'petals' are actually furry bracts that shield the tiny yellow florets from cold and UV at up to 3,400 metres.

The dandelion's name comes from the French for what?

It refers to the jagged leaves; the fluffy seed head, by contrast, is nicknamed a clock or blowball.

Magnolias evolved before bees existed. Which insects are thought to be their original pollinators?

The tough, bowl-shaped blooms can survive being chewed on, and fossil magnolias date back around 95 million years.

Malaysia's national flower, the bunga raya, is a hibiscus also nicknamed the "shoeblack plant". Why?

The Indonesian name kembang sepatu means 'shoe flower' for the same reason.

Which bright orange flower, cempasúchil, decorates altars and graves for Día de Muertos?

The Aztecs called it 'twenty flower' and it is still nicknamed flor de muertos, the flower of the dead.

Which artist's 1932 painting Jimson Weed/White Flower No. 1 sold for $44.4 million in 2014, a record for a woman artist?

Walmart heiress Alice Walton bought it, and it now hangs at her Crystal Bridges museum.

Which naturalist proposed a 'horologium florae', a flower clock garden, in his 1751 Philosophia Botanica?

He probably never planted one himself, and gardens that tried found the timings only work in Uppsala's summer daylight.

True lilies of the genus Lilium are known to be highly toxic to which household pet?

Many plants called 'lily' are not true lilies, but the real ones can cause kidney failure in cats.

How many petal-like segments does a Lilium flower have?

They spread or curl back to give shapes from funnel to 'Turk's cap'.

Which statistician used measurements of three Iris species in a famous 1936 paper?

The Iris flower data set is still a standard teaching example of linear discriminant analysis.

On an iris flower, what are the three drooping sepals called?

Some rhizomatous irises carry a fuzzy 'beard' at the base of each fall.

Roughly how many accepted species does the genus Iris contain?

Some species are commonly called flags, and the junos belong to the subgenus Scorpiris.

How long does a peony's blooming season typically last?

Their short season is why cut peonies are only available in late spring and early summer.

Peonies are the only genus in which plant family?

Botanists currently recognize about 33 species, ranging from herbaceous perennials to woody shrubs.

Lavender is a member of which group of plants?

The genus Lavandula has 47 known species, native from Iberia to India.

Which two compounds are the main components of lavender oil?

Around 93 phytochemicals have been identified in the oil.

Jasmine belongs to the same plant family as which tree?

Jasminum contains around 200 species prized for fragrance.

Which Egyptian village grows most of the jasmine used by the global perfume industry?

Jasmine's center of diversity is South and Southeast Asia, but perfume houses source heavily from Egypt.

What is the botanical genus name for lilacs?

The 12 species are woody plants in the olive family, closely related to privet.

The name 'daisy' is considered a corruption of which phrase?

The head closes at night and opens in the morning; Chaucer called it 'eye of the day'.

The common daisy's Latin name Bellis perennis roughly translates as what?

In medieval times the flower was known as 'Mary's Rose' and also as bruisewort.

In horticulture, large-flowered multicolored cultivars of Viola are usually called what?

Viola is the largest genus in its family, with more than 680 species.

Which Greek botanist coined the term 'dianthus', meaning divine flower?

Carnations were mentioned in Greek literature 2,000 years ago.

The carnation's spicy scent earned it what common name?

The fragrance is often compared to a mix of cinnamon and nutmeg.

Gardenias belong to the same family as which beverage plant?

The genus was named for Scottish naturalist Alexander Garden.

The genus Gardenia honors a naturalist of which nationality?

Alexander Garden (1730-1791) was a correspondent of Linnaeus; Jane Colden first proposed the name and often goes uncredited.

Which species of the tea genus is actually processed into tea?

C. oleifera yields tea seed oil, while C. japonica and C. sasanqua supply hundreds of garden cultivars.

Truly yellow camellia flowers are found in the wild only in South China and which other country?

Tea varieties of camellia are always white-flowered.

Snapdragons get their name because their flowers resemble the face of what creature?

Squeezed from the sides, the 'mouth' opens and closes; the genus is Antirrhinum.

The genus name Digitalis, for foxgloves, comes from the Latin word for what?

The tubular flowers fit neatly over a fingertip; the plant yields the heart drug digoxin.

Which cardiac drug is extracted from foxglove plants?

Foxglove is also very toxic to humans and other mammals if eaten.

Japanese wisteria twines in which direction when viewed from above?

Chinese wisteria twines the opposite way, which helps tell the two species apart.

The world's largest known wisteria, spanning more than an acre, grows in which California town?

Planted in 1894, it weighs an estimated 250 tons.

Wisteria is a member of which group of plants?

Its four species of woody vines are native to East Asia, eastern North America and northern Iran.

The bird of paradise flower, Strelitzia, is the floral emblem of which US city?

It also appears on the reverse of South Africa's 50-cent coin.

Strelitzia was named by Joseph Banks in honor of which British queen?

The genus of five species is native to South Africa, where it is called the crane flower.

Strelitzia is believed to be the only plant genus pollinated by which part of a bird?

Sunbirds perch on the spathe, which opens under their weight and dusts pollen onto their feet.

Dahlias were known only to the Aztecs and neighboring peoples until which event?

They store energy as inulin, a fructose polymer, instead of starch.

Dahlias come in almost every color except which one?

There are 49 species, all native to Mexico and Central America.

The name Gladiolus is Latin for a small version of what object?

The plants are sometimes called sword lilies for their blade-shaped leaves.

Gladioli grow from which type of underground storage organ?

The corms resemble those of crocuses, wrapped in fibrous brown tunics.

The genus Zinnia honors an 18th-century scientist of which nationality?

Johann Gottfried Zinn was a botanist and anatomist; the flowers' center of diversity is Mexico.

Which botanist separated Pelargonium from Geranium into two genera in 1789?

Linnaeus had lumped all of them under Geranium; the flowers still get called geraniums in garden centers.

Unlike a true Geranium, a Pelargonium flower is zygomorphic, meaning what?

Pelargoniums are zygomorphic, with three lower and two upper petals, while Geranium flowers are radial.

The petunia's name comes from a Tupi-Guarani word for which plant?

Petunias belong to the nightshade family alongside tobacco, tomatoes and potatoes.

Which rare red-flowered species in a nightshade genus is pollinated by hummingbirds?

Most petunias are insect pollinated and are favorites of the hummingbird hawk moth.

The rhododendron is the national flower of which country?

It is also the state flower of Washington and West Virginia.

The word rhododendron combines the Greek words for 'rose' and what?

The genus has about 1,024 species, mostly from eastern Asia and the Himalayas.

How many anthers per flower distinguish azaleas from 'true' rhododendrons?

Azaleas make up two subgenera within Rhododendron.

The showy colored parts of a bougainvillea are actually what?

The true flowers are small and white, hidden inside the papery bracts.

Bougainvillea is named after a French explorer of which profession?

Botanist Philibert Commerçon described the plant while sailing with Louis Antoine de Bougainville.

The poinsettia is named after the first U.S. minister to which country?

Joel Roberts Poinsett brought the plant to the U.S. in the 1820s; the Nahuatl name is cuetlaxochitl.

Roughly how many poinsettias are sold in the United States each year in a six-week period?

Paul Ecke Ranch grows about half the world's supply and 70 percent of the US market.

Which California grower supplies about half of the world's poinsettias?

Despite its reputation, the poinsettia is not dangerous to pets or children.

The giant Amazon water lily's genus was named in 1837 after which newly crowned monarch?

John Lindley named it from specimens Robert Schomburgk sent from British Guiana.

How wide can the floating leaves of Victoria amazonica grow?

The pads sit on submerged stalks 7 to 8 metres long.

Plumeria is better known by which common name?

Its milky sap irritates skin and eyes, but the night-scented flowers are prized for leis in Hawaii.

What is the central column bearing the stamens and pistil in a passion flower called?

It is the hallmark of the genus Passiflora, which has about 550 species.

The snowdrop's genus name Galanthus combines the Greek words for 'flower' and what?

Its inner tepals carry green markings, and most species flower before the spring equinox.

How many leaves does a typical snowdrop plant produce?

The single drooping white flower has six tepals in two whorls.

The word 'daffodil' appears to derive from the name of which other flower?

The genus Narcissus arose in the Iberian Peninsula and was described by Linnaeus in 1753.

What is the cup- or trumpet-shaped central part of a daffodil flower called?

It sits above six petal-like tepals, often in a contrasting color.

Which people are credited as the first to cultivate tulips, in the 10th century?

Tulips later became the symbol of the Ottomans and reached Northern Europe in the 16th century.

Which botanist planted tulips in Vienna in 1573 and spread the bulbs across Europe?

Clusius later took bulbs to Leiden, launching the Dutch tulip industry.

Which was the most expensive tulip during the 17th-century tulip mania?

Its streaked petals were actually the work of tulip mosaic virus.

Tulips belong to which plant family?

There are about 75 species divided among four subgenera.

Roughly how many paintings make up Monet's Water Lilies series?

They depict his garden at Giverny and occupied the last 31 years of his life.

Which Paris museum built two oval rooms to house eight large Monet water lily murals?

The rooms opened to the public in May 1927, months after Monet's death.

Monet painted many of his Water Lilies while suffering from which eye condition?

The series was the main focus of his work in his final decades at Giverny.

Wordsworth's poem 'I Wandered Lonely as a Cloud' was inspired by daffodils beside which lake?

He saw the 'long belt' of flowers on a walk with his sister Dorothy in April 1802.

How many lines long is Wordsworth's daffodil poem 'I Wandered Lonely as a Cloud'?

It was written in 1804, published in 1807 and came fifth in a 1995 BBC poll of favourite poems.

On the grounds of which institution is the RHS Great Spring Show held each May?

The show has been held at Chelsea since 1912 and lasts five days each May.

In which year did the RHS flower show move to its Chelsea site?

Before that the Great Spring Show ran at Kensington from 1862 and the Temple Gardens from 1888.

What does the name Keukenhof literally mean in Dutch?

It was once the kitchen garden of a 15th-century castle, Slot Teylingen.

Roughly how many flower bulbs are planted at Keukenhof each year?

The garden covers 32 hectares and opens for only about eight weeks each spring.

In which Dutch municipality is Keukenhof located?

It sits in the 'Dune and Bulb Region' of South Holland, southwest of Amsterdam.

The world's biggest flower auction, Royal FloraHolland, is headquartered in which Dutch town?

Its Aalsmeer building is the largest in Europe by floor area.

How many flowers did Royal FloraHolland destroy in March 2020 as COVID collapsed demand?

That included 160 million tulips; sales fell more than 70 percent.

The fleur-de-lis is a stylized depiction of which flower?

The name comes from French fleur 'flower' and lis 'lily', though some argue it began as an iris.

The fleur-de-lis appears on the flag of which Canadian province?

It was the emblem of the French royal arms from the High Middle Ages until 1789.

What is the collective term for all the petals of a flower?

The sepals collectively form the calyx; when the two are hard to tell apart, they are called tepals.

When petals and sepals are indistinguishable, what are they collectively called?

Tulips and lilies are classic examples of tepal-bearing flowers.

What is the collective name for a flower's sepals?

Sepals are usually green and protect the flower in bud.

A stamen typically consists of an anther and which stalk?

All the stamens of a flower together form the androecium.

Which cactus has been found to carry as many as 3,482 stamens in a single flower?

At the other extreme, Canna flowers can have as little as half a stamen.

Pollination is the transfer of pollen from an anther to which part of a flower?

The pollen then grows a tube down the style to the ovary.

What is it called when one sperm nucleus forms the embryo and another forms endosperm?

The result is a seed with both an embryo and its own food supply.

The word 'angiosperm' comes from Greek words meaning what?

Angiosperm seeds are enclosed within a fruit, unlike the naked seeds of gymnosperms.

Roughly how many known species of flowering plants are there?

They span 64 orders and 416 families and diversified explosively in the Cretaceous.

In which geological period did flowering plants diversify explosively to dominate the planet?

Their ancestors had split from the gymnosperm line more than 300 million years ago.

The forget-me-not is the official flower of which US state?

Its genus name Myosotis means 'mouse's ear' in Greek, after the shape of the leaves.

The genus name of forget-me-nots, Myosotis, means what in Greek?

The foliage was thought to resemble a mouse's ear; the flowers are typically blue.

What is the French name for lily of the valley, often used for perfumes imitating its scent?

The plant is highly poisonous due to cardiac glycosides, despite its sweet smell.

In pre-modern England, lily of the valley was known as 'glovewort' because it was used for what?

Another old name, Apollinaris, came from a legend that Apollo discovered it.

Anemones are commonly known by what wind-related name?

In most species the colorful parts are sepals; true petals are missing.

The word chamomile comes from Greek words meaning what?

Two species, Matricaria chamomilla and Chamaemelum nobile, are used for herbal teas.

Which country has the highest diversity of Cosmos species, with 33 of the 35?

The name may come from the Greek for 'ordered world' or for 'jewel'.

The genus name Delphinium comes from the Greek word for which animal?

Dioscorides said the flowers were dolphin-shaped; all species are toxic to humans and livestock.

In Greek myth, the hyacinth flower sprang from the blood of a youth killed by which god?

The west wind god was jealous of Hyacinth's love for Apollo.

Grape hyacinths belong to which separate genus?

True hyacinths, Hyacinthus, are native to the Eastern Mediterranean.

The garden nasturtium's name literally means what?

It produces a peppery oil similar to watercress, whose genus is actually Nasturtium.

Which Franciscan monk and botanist first described the sweet pea in 1696?

He grew them at the botanic garden at Misilmeri, Sicily, and sent seed to English botanists.

The sweet pea, Lathyrus odoratus, is native to which Mediterranean island?

Wild plants have purple flowers; cultivars come in almost every color.

Morning glories, moonflowers and the sweet potato all belong to which genus?

It is the largest genus in the bindweed family, with more than 600 species.

Honeysuckle's genus name Lonicera honors a botanist from which era?

Adam Lonicer gave his name to 158 species; the common name refers to the sweet nectar in the flowers.

Which Lonicera species has become an aggressive invasive around the world since the early 1800s?

Lonicera japonica is known as jinyinhua in Chinese.

Common heather, Calluna vulgaris, flowers during which months?

It is the dominant plant of European heathland and moorland, and is sometimes called ling.

Which species is the true national flower of Scotland?

Cotton thistle is also called Scotch thistle but is not native to Britain.

The cornflower is also commonly known by what name?

It once grew as a weed in grain fields, hence 'corn', and is now endangered in its native habitat.

The blue pigment in cornflowers, protocyanin, produces which color in roses?

The same molecule shifts color depending on the plant's chemistry.

The orchid genus Cattleya was named after a horticulturalist of which nationality?

John Lindley named it in 1824 for William Cattley, who grew a plant found in Pernambuco, Brazil.

Which orchid genus is commonly known as the moth orchid?

Its roughly 70 species mostly grow in Indonesia and the Philippines.

The orchid genus name Vanda comes from which language?

It was the name for Vanda roxburghii; the genus has 90 species across Asia.

How many living species of lotus, genus Nelumbo, exist today?

Nelumbo nucifera is Asian and Nelumbo lutea is native to North America and the Caribbean.

Members of the genus Ranunculus are commonly known by which name?

The genus has about 1,750 species, including the water crowfoots.

Which extremely poisonous flower is also known as monkshood or wolfsbane?

Its Greek name may come from 'akon', a dart, whose tips were poisoned with the plant.

Oleander is the only species in which genus?

It is poisonous but so bitter that human poisoning cases are rare.

Hibiscus is a member of which group of plants?

Its Greek name was given by Dioscorides to what is now the marsh mallow, Althaea officinalis.

Which garden flowers make up the genus Alcea?

Its more than 80 species are native to Asia and Europe; red ones attract hummingbirds.

In Scotland, the name 'bluebell' usually refers to which flower?

Elsewhere in Britain the bluebell is Hyacinthoides non-scripta, protected under UK law.

Columbines, genus Aquilegia, are known for petals bearing what feature?

In North America the spur lengths evolved to suit different pollinators.

What did the Nahua people originally call the marigolds of the genus Tagetes?

The plants are native to central and southern Mexico; Linnaeus formally named the genus in 1753.

The calla lily is the national flower of which African country?

Its scientific name, Zantedeschia aethiopica, points to the connection.

Fawn lilies and trout lilies belong to which genus, closely related to tulips?

The name comes from the Greek for 'red', after the flowers of the dog's-tooth violet.

The term 'sepalum' was coined in 1790 from a Greek word meaning what?

Noël Martin Joseph de Necker introduced it; sepals shield the flower in bud.

Which genus of rootless duckweed, known as watermeal, contains the smallest flowering plants on Earth?

The specks resemble floating cornmeal, and one species doubles in 29.3 hours, the fastest growth of any flowering plant.

Which English physician first described using foxglove extract for heart conditions in 1785?

His account is regarded as the beginning of modern therapeutics; today's digoxin comes mainly from Digitalis lanata.