50 Fun Facts About Orange

Botanically, the sweet orange is a hybrid between the mandarin and which other citrus fruit?

Genome analysis puts it at roughly 42% pomelo and 58% mandarin; the grapefruit in turn arose from a sweet orange crossed back with pomelo.

The earliest known mention of the sweet orange, from 314 BC, appears in the literature of which country?

The fruit was domesticated in a region spanning southern China, northeast India and Myanmar; it does not exist in the wild.

Which country produced the most oranges in 2024, about 23% of the world total?

About 67 million tonnes were grown worldwide, with China and Mexico next.

Oranges first appear in Western art in which famous 1434 painting by Jan van Eyck?

Chinese painters had shown them centuries earlier, and Botticelli later set his Primavera in an orange grove.

What did Louis XIV confiscate from Nicolas Fouquet's estate after condemning him in 1664?

Louis loved orange trees, kept them in silver tubs around Versailles and built the grandest royal orangery there.

Which explorer may have planted the first oranges in the Americas, on Hispaniola in 1493?

Later Spanish expeditions carried the fruit to Mexico, South America and Florida during the 1500s.

The seedless navel orange first appeared in the early 1800s as a mutation in which country?

The 'navel' is a small second fruit at the apex. The variety is less suited to juice because its flesh turns bitter when exposed to air.

Which Riverside, California woman planted two navel orange cuttings in 1873, founding the state's citrus industry?

The USDA had imported a dozen trees from South America to Washington; the fruit from her trees became known as the Washington navel.

The word 'orange' ultimately traces back to which language family of South India?

It travelled through Sanskrit naranga, Persian narang and Arabic naranj before reaching Old French as pomme d'orenge.

In French 'une norenge' was heard as 'une orenge', dropping the n. What is this process called?

English 'an apron' (from 'a napron') and 'an adder' (from 'a nadder') were reshaped the same way.

The earliest recorded English use of 'orange' as a colour name, in 1502, described what?

Until then English speakers called the colour yellow-red, or simply 'red', which is why we still say red hair and robin redbreast.

Before the fruit gave the colour its English name, what was the colour usually called?

Old English used geolurēad for reddish orange and geolucrog, 'yellow-saffron', for the yellower shades.

Human eyes see orange when light has a dominant wavelength in roughly which range?

That places it between yellow and red on the visible spectrum; in the HSV colour space its hue is 30 degrees.

In painting, which colour is traditionally treated as the complement of orange?

Van Gogh wrote to his brother Theo about seeking 'the oppositions of blue with orange'; the strict optical complement is closer to azure.

The orange colour of carrots, pumpkins and oranges comes from which pigments?

The same pigments give autumn leaves their hue once the chlorophyll breaks down.

Which famous structure is painted 'international orange' to make it more visible in fog?

Orange is also worn by highway workers, lifeguards and prisoners for the same reason: it is easy to see.

Orange is the national colour of which country?

It comes from the royal house whose heir still carries the title Prince of Orange.

The House of Orange takes its name from a tiny principality just north of which French city?

The 108-square-mile Principality of Orange dates from 1163; the family adopted its name and colour in the 1570s.

What was the Latin name of the Roman colony at Orange in Provence, founded by legion veterans?

Its first-century theatre is among the best preserved of all Roman theatres and hosts the Chorégies d'Orange opera festival.

By some accounts, 18th-century Dutch farmers bred carrots in their national colour to honour whom?

Before then European carrots were mostly white or red and Asian ones purple. The long orange Dutch carrot of 1721 is the ancestor of the supermarket carrot.

Irish Protestants became known as what after a Dutch-born Protestant king defended them?

The Orange Order, a Protestant fraternal organisation founded in 1795, has marched under the colour in Northern Ireland ever since.

The Orange River, South Africa's longest, rises in the Drakensberg mountains of which country?

It runs 2,432 km west to the Atlantic and was named for the Dutch royal house; Oranjemund in Namibia sits at its mouth.

The 2004 'Orange Revolution' carried reformer Viktor Yushchenko to the presidency of which country?

Orange was the rallying colour of the protests in Kyiv that November and December.

The flag of New York City carries an orange stripe in memory of whom?

Nassau County, next door, is named after the House of Orange-Nassau for the same reason.

In Confucianism, orange was regarded as the colour of what?

In China and India the colour took its name from saffron, the finest dye in Asia, rather than from the fruit.

The Orange Bowl college football game has been played every year since 1935 in which metropolitan area?

It is tied with the Sugar Bowl and Sun Bowl as the second-oldest bowl game, behind only the Rose Bowl.

Agent Orange belonged to a group of Vietnam War defoliants known collectively as what?

It was sprayed under Operation Ranch Hand from 1962 to 1971 and contained trace dioxin, a carcinogen.

The crimson flesh of a blood orange comes from which pigments, unusual in citrus?

The red develops only when the fruit grows through cold nights, and keeps deepening in cold storage after harvest.

British marmalade is traditionally made from which bitter orange, nearly all of which Spain exports to Britain?

Their pith supplies the pectin that makes the marmalade set. Mary Kettilby published the first recipe in 1714.

Which Dundee woman is credited with first adding pieces of peel to marmalade in the 1790s?

The peel brings the bitter substances limonene and naringin, giving marmalade its distinctive edge.

The dried peel of the laraha, a bitter-orange subspecies, is used to flavour which liqueur?

The laraha grows on the Caribbean island the drink is named after; its raw pulp is too bitter to eat.

Most of the world's bergamot orange, prized for its aromatic oil, is grown in which Italian region?

Production is concentrated on the Ionian coast around Reggio di Calabria, where the fruit is a symbol of the city.

Which US state adopted orange juice as its official beverage in 1967?

By 1949 the state's plants were already turning out over 10 million gallons of concentrate a year.

Concentrated orange juice was developed during World War II because soldiers kept rejecting what?

The government wanted a palatable way to prevent scurvy, and consumers later embraced the frozen concentrate as cheap and convenient.

Like all citrus, oranges are 'non-climacteric', which means what?

Growers can turn green skin orange with ethylene gas after harvest, but the inside stays exactly as ripe as it was on the tree.

Which gas do packers use to turn green-skinned oranges orange in a process called 'degreening'?

Ripe oranges often keep green patches, and in warm climates can stay entirely green while perfectly sweet inside.

An orange typically contains about how many segments (carpels)?

Each is wrapped in a membrane and packed with juice-filled vesicles; botanically the whole thing is a modified berry called a hesperidium.

The California Fruit Growers Exchange, formed in 1905, later became known by what brand name?

The cooperative standardised and marketed California citrus worldwide.

During the California Gold Rush, demand for oranges rose because they helped miners avoid which disease?

Reports of $1,000 profit per acre later drew Midwestern farmers into citrus growing in Southern California.

Which arsenic-bearing mineral pigment gave ancient artists an orange-toned colour and was loved by alchemists?

It was traded across the Roman Empire, used as medicine in China despite being highly toxic, and even used to poison arrows.

Who introduced the bitter orange, lemon and lime to Spain during the Arab Agricultural Revolution?

Large-scale cultivation began in the 10th century; the sweet orange only reached the Mediterranean around 1500 via Italian and Portuguese merchants.

The Dutch-born English king from the House of Orange co-founded which Virginia institution in 1693?

He also lends his name to Nassau County, New York, via the House of Orange-Nassau.

'Sporange', an eye rhyme for 'orange', is a variant of which botanical term?

It is not a true rhyme because its second syllable is stressed and unreduced; hinge, lozenge and porridge are the usual half-rhymes.

The teen slang 'Nadsat' in Anthony Burgess's A Clockwork Orange is heavily influenced by which language?

The name comes from the Russian suffix equivalent to '-teen'; Burgess claimed he wrote the novel in three weeks.

US editions of A Clockwork Orange omitted the redemptive 21st chapter until which year?

Burgess chose 21 chapters as a nod to the age of maturity; the American publisher wanted the darker ending, and Kubrick's film followed the US text.

Which theme park opened in Orange County, California, in 1955?

At the 2020 census Orange County was California's third most populous, with 34 cities; Anaheim, Orange and Santa Ana still have 19th-century downtowns.

Orange flesh is roughly what percentage water?

The rest is mostly carbohydrate; 100 g supplies 47 calories and about 59% of the daily value of vitamin C.

Citrus greening disease, the biggest threat to orange growing since 2010, is spread mainly by what?

Infected trees live only five to eight years and never bear edible fruit; the bacterium reached Florida in 1998 and Brazil in 2004.

Which pest ended sweet orange cultivation in Hawaii in the early 1900s?

Botanist Archibald Menzies had given orange seedlings raised on board ship to Hawaiian chiefs in 1792.

At Versailles, Louis XIV displayed potted orange trees throughout the palace in tubs made of what?

His Orangerie allowed year-round cultivation to keep the court supplied with fruit.