Celery Seeds: Flavor, Chemistry, Uses and What the Research Shows

Celery seed comes from celery itself: the seeds are the tiny dried fruits of Apium graveolens, the same plant that gives us the stalks. They taste like celery, only far more concentrated and with a bitter edge, and a pinch goes a long way in pickles, dressings, slaws and spice rubs. They’re not a modern discovery, either. Celery fruits and leaves were common flavorings in the Roman Empire, more common in the Apicius cookbook than they are today.

At a glance

What celery seed is

Celery seed comes from celery itself. Katzer calls the plant’s fruits, often called celery seeds, a strong though uncommon spice, and a 2019 review of the genus refers simply to “the seed of celery.”²¹ Apium graveolens is a biennial of temperate regions.

You’ll often read that celery seed comes not from celery but from lovage or some other “wild” plant. Lovage is a different plant altogether: Levisticum officinale, the only member of its genus, native from southern Iran to Afghanistan. We found no source showing that commercial celery seed is lovage seed. For that herb, see lovage.

Flavor and the compounds behind it

Katzer says the seeds smell like the celery leaf and root, only much stronger. He also calls them slightly bitter and notes that some people compare them to fenugreek. Modern celery cultivars, he adds, are much lower in bitter compounds than wild forms or the celery of Roman times.² Think concentrated celery with a grassy, faintly citrus edge and a bitter finish.

That smell lives in an essential oil that makes up about 3% of the seed’s dry weight.¹ Two sources break the oil down differently, and both are describing celery oil in general, not seed oil specifically:

The review says a series of phthalides gives celery oil its characteristic smell, and names sedanenolide and 3-n-butylphthalide as present in remarkable quantity.¹ Katzer also credits phthalides, including 3-butylphthalide and sedanenolide, with the fragrance, but says sedanenolide shows up only in traces.² Limonene is the most abundant compound, but it’s not what makes celery smell like celery.

Origin and history

The native range of Apium graveolens runs from Macaronesia to North Africa and Europe to the western Himalaya. Katzer writes that celery fruits and leaves were common flavorings in the Roman Empire, more common in the Apicius cookbook than they are today, and that the seeds are rarely used now.² So the idea that celery seed only became a cooking spice in the 19th century doesn’t hold up.

Other history claims get passed around too: that celery appears in texts from before 850 BCE, that the Roman writer Celsus prescribed the seed for pain, and that ancient Chinese, Japanese and Ayurvedic healers used it. We couldn’t open a source for any of them, so we’ve left them out.

Production

India’s Spices Board reports celery at 7,598 tonnes from 4,964 hectares in 2024-25 (final), and carries the same figure as the 2025-26 advance estimate. The three years before that ranged from 6,557 to 6,882 tonnes. The Board notes that figures from 2020-21 on may be revised.³ You’ll also see claims that most celery seed comes from China, or that France is a major producer. We couldn’t check either against any statistical source.

How celery seed is used

• Pickles, slaws and dressings. The classic North American uses.
• Celery salt. McCormick’s celery salt lists just two ingredients, salt and celery seed.⁶ See celery salt and celery seed vs. celery salt.
• Seasoning blends. McCormick’s Cajun seasoning lists celery seed among its spices.⁷ See Cajun seasoning.
• Cooked vegetables. Katzer calls the seed a great addition to cooked vegetables, and a rewarding spice to play with because it stands up to heat.
• South Asia. Katzer says celery seed can stand in for radhuni in the Bengali mix panch phoron, and that it sometimes turns up in curry powder, probably for the same reason.² See panch phoran and curry powder.

For more ideas, see celery seed uses.

Nutrition per teaspoon

USDA’s entry for celery seed puts a teaspoon at 2 g. Here’s what that teaspoon gives you, worked out from USDA’s per-100 g values and the FDA’s Daily Values:⁸⁹

The per-100 g numbers look big, but a teaspoon only covers a few percent of what you need in a day.

Buying and quality

We haven’t seen a grading standard for celery seed. Look for whole seed that’s uniform and free of chaff, with a strong celery smell when you crush it.

Storage

We couldn’t find a shelf-life figure for celery seed from a regulator or standards body. Keep whole seed sealed, cool and dark, grind it as you need it, and trust your nose.

Safety

• Allergen labeling. In the EU, celery and products made from it are among the allergens that have to be emphasized in the ingredient list.¹⁰ Celery isn’t one of the nine major food allergens under US law.¹¹
• Lead. In 2024 the Codex Alimentarius Commission adopted new maximum lead levels for spices, including dried celery seeds.⁵ According to a law firm’s summary of the committee’s outcome, the general limit for dried seeds (0.9 mg/kg) doesn’t apply to celery seed, which gets its own limit of 1.5 mg/kg.⁴ Those figures come from that summary, not the Codex text itself.

Health claims

Celery seed gets promoted for arthritis, gout, muscle spasms, anxiety and high blood pressure, and as a mosquito repellent. Here’s what we could find:

• Blood pressure, blood sugar and lipids. A 2025 systematic review and meta-analysis pooled 10 randomized controlled trials with 511 adults. It found reductions in systolic and diastolic blood pressure, fasting blood sugar and triglycerides, but no effect on total, LDL or HDL cholesterol. The trials tested celery in several forms, not just the seed. A subgroup analysis suggested celery seed, or preparations above 1,000 mg a day, worked better than other parts of the plant. The authors flag substantial heterogeneity and small samples and call for larger, longer trials. They report no significant difference in adverse events between celery and placebo.¹² We’re going by the review’s abstract only.
• Everything else. We found no systematic review or regulator summary backing the claims for arthritis, gout, muscle spasms, anxiety or insect repellence, so we’re not repeating them.

We’re not claiming celery seed treats or prevents any condition.

Substitutes and comparisons

Celery salt has the same flavor but adds a lot of sodium. Dried celery leaves or flakes give you a milder celery note. See celery seed substitutes, celery seed vs. celery powder, celery powder, celery leaves and celery flakes.