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The Sunflower: A Radiant Flower Full of Surprising Secrets

Why sunflowers face east, how a Russian church rule helped make them a global oil crop, and the surprising history and science behind the flower.

By Written Facts StaffJune 3, 2023Updated October 15, 20267 min read

You've probably driven past a summer field of sunflowers and noticed that every head points the same way. That's no accident. Mature sunflowers face east, because warm morning faces draw more bees. And that "flower" is really hundreds of tiny flowers packed together. The sunflower is an American plant that a Russian church rule turned into a global oil crop, and that Ukraine turned into a symbol of defiance. Here is how one plant came to carry all of that, and what it means for the seeds you eat and the ones you plant.

One head, many flowers

A sunflower head (Helianthus annuus) is a pseudanthium, a "false flower" made of many small florets. The yellow "petals" around the edge are ray florets. They are sterile and exist only to attract pollinators.

The working part is the center. Each disc floret is a complete flower with both stamens and a pistil, and each one can produce a single-seeded fruit called an achene. When you crack a sunflower "seed," you are opening one of those fruits.

Why the heads all point east

Young sunflowers really do follow the sun. A 2016 study in Science by Hagop Atamian and colleagues found that an internal circadian clock drives the stem to grow unevenly: one side lengthens during the day and the other at night. The bud swings west through the afternoon and back east overnight.

Once the plant matures, the tracking stops and the head settles facing east. The researchers found a reason. East-facing heads warm up in the morning sun, and warm heads get many more visits from bees.

Born in the Americas

The sunflower's story starts in North America. Archaeological and genetic evidence shows that people in eastern North America domesticated it around 2300–2800 BCE, as part of the Eastern Agricultural Complex. Finds at San Andrés in Tabasco, Mexico, point to cultivation there by about 2600 BCE.

Europe had no sunflowers until Spanish voyages brought them back in the 16th century. China's first record of the plant dates to 1621, late in the Ming dynasty. It was called zhangju, the "10-foot chrysanthemum." By 1635 it had picked up the name xiangrikui, which is still used today. No earlier Chinese record of the plant is known.

How Russia turned a garden flower into a crop

Peter the Great brought ornamental sunflower seeds to Russia from the Netherlands in the early 18th century. For about a hundred years the plant was mostly decorative.

That changed in 1829. Daniil Bokaryov, a serf in the village of Alekseevka, worked out how to press oil from the seeds commercially. Russia's first commercial sunflower oil mill opened in 1833.

The Russian Orthodox Church helped the crop spread. It banned many animal fats and oils during Lent, but sunflower oil was new and did not appear on the forbidden list. Believers could cook with it during the fast, so demand grew quickly.

Where sunflowers grow now

That Eastern European head start still shapes the map. USDA projections for 2026/27 put Russia at about 20.7 million metric tons of sunflower seed and Ukraine at about 12.8 million. Together with the European Union, they grow roughly three-quarters of the world's supply.

In the United States, 2025 production reached 2.32 billion pounds. North Dakota led with 1.09 billion pounds, followed by South Dakota with 866 million. Kansas, which grows far less, made the wild native sunflower its official state flower in 1903.

A symbol for Ukraine

The sunflower is Ukraine's national flower, and in 2022 it became a symbol around the world. On February 24, the first day of Russia's full-scale invasion, a woman in Henychesk confronted armed Russian soldiers. She told them to put sunflower seeds in their pockets, so that flowers would grow where they died. Video of the exchange spread widely, and the sunflower became an emblem of Ukrainian resistance.

A myth that didn't involve sunflowers

Many articles say the sunflower comes from the Greek myth of Clytie, the nymph who pined for the sun god and turned into a flower that follows him. In Ovid's Metamorphoses, Clytie becomes a heliotrope, sometimes called a turnsole, which is a Mediterranean plant. The ancient Greeks and Romans could not have known the sunflower, because it reached Europe only in the 1500s. Later artists and writers simply attached the story to the new flower.

Van Gogh's welcome gift

The most famous sunflowers in art were painted as a housewarming gesture. In August 1888, Vincent van Gogh painted his Sunflowers still lifes in Arles to decorate the bedroom he was preparing for Paul Gauguin in the Yellow House. Gauguin arrived that October.

A plant that cleans up

Sunflowers also have a working role in pollution cleanup, a method called phytoremediation. Their roots take up radioactive cesium-137 and strontium-90, because the plant mistakes those elements for the nutrients potassium and calcium. After the 1986 Chernobyl disaster, sunflowers were tested for drawing these isotopes out of contaminated water.

What's in the seeds

According to USDA data, 100 grams of raw, dried sunflower kernels contain about 20.8 grams of protein, 51.5 grams of fat and 8.6 grams of fiber. That is a lot more than most people eat in one sitting. The FDA's standard snack serving for seeds and nuts is 30 grams.

At 30 grams, the same figures work out to roughly 6 grams of protein, 15 grams of fat and 2.6 grams of fiber. Because more than half the kernel's weight is fat, a small handful counts as a full serving.

Growing your own

If you want a row of east-facing heads in your own yard, university extension guides give two main requirements:

Plant in well-drained soil with a pH between 6.0 and 7.5.
Choose a spot that gets at least 6 to 8 hours of direct, unfiltered sun every day.

The plants can grow far taller than most gardens need. The Guinness record for the tallest sunflower was set on September 3, 2025, by Alex Babich of Fort Wayne, Indiana. His plant measured 10.90 meters (35 ft 9 in). It beat the 9.17-meter (30 ft 1 in) plant that Hans-Peter Schiffer grew in Kaarst, Germany, in 2014. The widest head on record, at 82 cm (32.25 in) across, was grown by Emily Martin in Maple Ridge, British Columbia, and verified in 1983.

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