Herb reference

Dill

Anethum graveolens L.

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Botanical / editorial

Family: Apiaceae
Plant type: annual herb
Route: Mixed route
Evidence tier: Mixed evidence

Mediterranean region and western Asia5000+Apiaceae

Botanical / meta

Botanical identity

Botanical description

Dill is an erect, branching annual herb growing 40–120 cm tall, with fine, feathery, blue-green, pinnately compound leaves that are highly aromatic. Small yellow flowers are borne in large, flat-topped compound umbels that can reach 15 cm in diameter. The fruits (commonly called dill seeds) are oval, flattened, light brown, and strongly aromatic with a warm, caraway-like scent. Both leaves (dill weed) and seeds are used, though they have somewhat different flavour profiles — leaves are brighter and more delicate, while seeds are stronger and more pungent.

Pharmacognosy intro

Dill seeds contain 2–4% essential oil rich in carvone (30–60%) and limonene (up to 40%), with dillapiole, α-phellandrene, and eugenol as minor constituents. The leaf (dill weed) oil has a different profile with higher concentrations of α-phellandrene, terpinene, and myristicin. The plant also contains flavonoids (quercetin, kaempferol, vicenin), phenolic acids, coumarins, and tannins. Carvone is responsible for the digestive carminative effects, antimicrobial activity, and smooth muscle relaxant properties. Dillapiole has demonstrated antiflatulent and carminative effects. The flavonoid fraction contributes antioxidant and anti-inflammatory activity.

Editorial orientation

The practical read

Body-first read

What it is for

Route panel

Preparation shapes the claim

Evidence and safety may differ by preparation. Essential oil, tea, tincture, extract, infused oil, and topical use are not interchangeable.

Mixed route

Quality

Fresh, dried, oil, and garden read

Growing tips

Dill is a cool-season annual that bolts quickly in hot weather. Sow seeds directly where they will grow, as it does not transplant well due to its taproot. It prefers full sun and well-drained, moderately fertile soil. Successive sowings every 2–3 weeks ensure a continuous supply of fresh leaves. Harvest leaves before flowering for the best flavour; allow some plants to flower and set seed for dill seed harvest. Dill self-seeds readily. The tall, airy plants (up to 1.2 m) may need staking in windy locations. Attracts beneficial insects including swallowtail butterflies.

Quality notes

Fresh dill leaves (dill weed) should be feathery, bright green to blue-green, and highly aromatic with a fresh, slightly sweet, anise-like scent. Yellowing or wilting indicates deterioration. Dill seeds should be oval, light brown, and strongly aromatic with a warm, caraway-like fragrance. Store fresh dill stems in water in the refrigerator, or freeze chopped leaves. Dill seeds retain flavour for 1–2 years when stored airtight. Essential oil should contain 30–60% carvone for therapeutic quality. Dill vinegar and dill seed oil are popular preservation forms. Do not substitute dill seeds for fresh dill weed in recipes without adjusting quantities.

Companion

Crystal pairing reference

Crystal side

Companion crystal

The deeper layer

Compound and clinical layer

Clinical and compound notes are included as a research layer, not as treatment instructions.

Safety intro

Dill is GRAS as a culinary herb and is generally very safe at food and traditional medicinal doses. Rare allergic reactions can occur in individuals sensitised to other Apiaceae family members (celery, fennel, caraway, coriander, anise, parsley). Dill contains photosensitising compounds; contact with the fresh plant followed by sun exposure may cause phytophotodermatitis (skin inflammation). Avoid medicinal doses of dill essential oil during pregnancy — traditional use as a labour inducer and reports of potential teratogenic effects at high doses warrant caution, though culinary amounts are safe. Dill may lower blood sugar; individuals with diabetes should monitor levels when using concentrated extracts. In cell studies, dill extract up-regulated drug-metabolising enzymes (CYP1A2, CYP2C19, SULT1A1, NAT2), suggesting theoretical potential for drug interactions at high doses, though human clinical evidence is lacking. Dill has shown mild sedative properties in traditional use; use caution when combining with CNS depressant medications.

Questions

Frequently asked about Dill

What are the safety concerns and drug interactions for dill?

Dill (Anethum graveolens) is GRAS as a culinary herb and very safe at food and traditional medicinal doses. Rare allergic reactions occur in people sensitised to other Apiaceae such as celery, fennel, caraway, coriander, anise, and parsley. Dill contains photosensitising compounds, so contact with the fresh plant followed by sun exposure may cause phytophotodermatitis. It may lower blood sugar, so people with diabetes should monitor levels when using concentrated extracts. In cell studies dill extract up-regulated drug-metabolising enzymes (CYP1A2, CYP2C19, SULT1A1, NAT2), suggesting a theoretical interaction potential at high doses, though human clinical evidence is lacking, and it has shown mild sedative properties, warranting caution with CNS depressant medications. Avoid medicinal doses of dill essential oil during pregnancy given traditional use as a labour inducer and reports of teratogenic potential at high doses, though culinary amounts are safe.

How is dill prepared and dosed?

Dill is used in two distinct forms: the feathery fresh leaf (dill weed), added at the end of cooking because its delicate aroma is destroyed by heat, and the dried seed, used in pickling brines and longer-cooked dishes where its carvone-rich profile holds up. Fresh dill weed is snipped over finished dishes to taste, while seeds are simmered or steeped. Traditionally the seeds are infused as a carminative tea for digestion and flatulence. There is no fixed medicinal dose for culinary use. Add the fresh herb just before serving to preserve both colour and the volatile aroma.

How do you evaluate dill quality and tell dill weed from dill seed?

Fresh dill weed should be bright green, feathery, and fragrant, with no yellowing, sliminess, or wilting; the aroma should be grassy and sweetly aromatic. Dill seed should be flat, oval, ribbed, light brown, and intact, releasing a sharp caraway-like scent when crushed. The two are not interchangeable: the leaf oil is richer in alpha-phellandrene, terpinene, and myristicin and tastes fresh and grassy, while the seed is dominated by carvone and limonene and tastes warm and pungent, closer to caraway. Fresh dill is easily confused by sight with fennel fronds, but fennel smells distinctly of anise. Faded colour and lost aroma signal the herb or seed is past its useful window.

How does dill differ from cumin, coriander, and caraway as a carminative?

Dill is an Apiaceae carminative like cumin, coriander, and caraway, but its chemistry centres on carvone, which makes up 30 to 60 percent of the seed's 2 to 4 percent essential oil alongside up to 40 percent limonene; this carvone signature is what drives its digestive, antispasmodic, smooth-muscle-relaxant, and antimicrobial effects. Carvone is the same compound class that defines caraway, which is why dill and caraway smell related, whereas cumin is built on cuminaldehyde and coriander on linalool. Dill also contains dillapiole, which contributes specifically antiflatulent and carminative action, supporting its traditional use in gripe water for infant colic. The leaf and seed differ too, since dill weed oil shifts toward alpha-phellandrene and myristicin. Knowing that carvone defines dill is the key to placing it correctly among the warm seed spices.

How should dill be stored and what is its shelf life?

Fresh dill weed is highly perishable, keeping about one week refrigerated when stood stem-down in a jar of water with the fronds loosely covered, or wrapped in a barely damp paper towel. For longer storage it freezes better than it dries, holding flavour for several months chopped into oil or water in ice cube trays, since drying loses most of the delicate leaf aroma. Dill seed, by contrast, is durable and keeps its carvone-rich scent for one to two years in an airtight container away from light and heat. Store seed and weed separately given their very different shelf lives. Loss of the characteristic aroma marks the end of useful life for either form.

Sources & Citations

Where this entry can be checked

Peer-reviewed sources for the pharmacological and clinical claims on this page. Crystalis herb entries describe tradition and current research; they are reference, not medical advice.

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SCI
Carvone-Rich Essential Oils and Their Agrobiological Interactions: A Review
Krajewska A, et al. (2026). Carvone-Rich Essential Oils and Their Agrobiological Interactions: A Review. Molecules. [SCI]DOI 10.3390/molecules31040579

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