Dill Toxic?

Updated 2026-03-06| 2 min read| 4,395 found this helpful
Anethum graveolena
1

Dill is confirmed non-toxic to cats, dogs, and horses by the ASPCA, with no documented ingestion-related poisoning risk for these species

2

The only identified irritant compound in dill is its naturally occurring essential oils

3

Adverse effects are limited to mild contact dermatitis only after extended direct skin exposure to the plant

FAQ

Is Dill toxic to Humans?

Mild localized redness, itching, or rash on skin after prolonged contact; no known toxicity from standard culinary ingestion (Low)

Is Dill toxic to Cats?

No known toxic effects from ingestion; rare mild skin irritation with extended direct contact (Non-toxic)

Is Dill toxic to Dogs?

No known toxic effects from ingestion; rare mild skin irritation with extended direct contact (Non-toxic)

Is Dill toxic to Horses?

No known toxic effects from ingestion; rare mild skin irritation with extended direct contact (Non-toxic)

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Toxicity Details

Humans
Low

Mild localized redness, itching, or rash on skin after prolonged contact; no known toxicity from standard culinary ingestion

Cats
Non-toxic

No known toxic effects from ingestion; rare mild skin irritation with extended direct contact

Dogs
Non-toxic

No known toxic effects from ingestion; rare mild skin irritation with extended direct contact

Horses
Non-toxic

No known toxic effects from ingestion; rare mild skin irritation with extended direct contact

Toxicity Snapshot

Toxic PartsAll fresh plant parts (leaves, stems, seeds) containing concentrated essential oils
Exposure RouteProlonged direct skin contact; no toxic exposure route via ingestion for common companion and livestock animals per available data
Toxic CompoundsEssential oils

First Aid & Prevention

First 30 Minutes

  • • Wash the affected skin area with mild soap and cool running water immediately if irritation develops after dill contact
  • • Offer fresh drinking water to animals that ingest small amounts of dill, monitor for unusual symptoms (extremely rare)
  • • Remove any remaining dill plant material from an animal's fur, mouth, or living space to prevent further exposure

Contact Vet Immediately

  • • If skin irritation persists for more than 24 hours, or shows signs of infection (swelling, oozing, increased pain)
  • • If your animal exhibits unexpected lethargy, vomiting, or diarrhea after consuming very large quantities of dill
  • • If the exposed individual has a documented history of severe plant-related allergic reactions

Prevention

  • • Limit prolonged unprotected skin contact with large volumes of fresh dill for humans and sensitive animals
  • • Store concentrated dill essential oil products out of reach of pets and children, as they have higher irritant concentrations
  • • Confirm plant identity before consumption if growing dill alongside visually similar toxic Apiaceae family plants

Treatment & Prognosis

  • • Apply vet/healthcare provider prescribed topical antihistamine or low-potency corticosteroid cream to reduce contact dermatitis symptoms
  • • Provide supportive care (hydration, bland diet) for rare mild gastrointestinal upset after large-volume ingestion
  • • Monitor exposed individuals for 24-48 hours post-exposure to ensure symptoms fully resolve without complications
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Professional Toxicology

Scientific NameAnethum graveolena
AliasesDill weed、Garden dill、Common dill
Toxicity Grade
HumansLow
CatsNon-toxic
DogsNon-toxic
HorsesNon-toxic
Target Organs
Integumentary system (skin)
Mechanism of Action

• Essential oil compounds in dill act as mild skin irritants, triggering contact dermatitis when skin is exposed to the plant for extended periods

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: No documented toxicity from ingestion as part of normal forage; rare mild contact dermatitis with prolonged exposure
Sheep: Non-toxic when consumed in standard forage amounts; no reported adverse effects
Domestic rabbits: Safe to consume in small quantities as part of a balanced diet; no known toxic risk
Confusion Risk

The following plants look similar and may be confused:

Poison Hemlock Conium maculatum
Visually identical to dill with matching feathery leaves and umbrella-shaped white flower clusters; key difference: poison hemlock has distinct purple splotches on its stems, while dill stems are solid green and emit a characteristic herbaceous scent when crushed
Fool's Parsley Aethusa cynapium
Mimics dill's leaf structure; key difference: fool's parsley has a foul, acrid odor when crushed, unlike dill's fresh, pleasant aromatic scent
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Data Sources

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.

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