Cow parsley Toxic?

Updated 2026-03-06| 3 min read| 3,856 found this helpful

Cow parsley is confirmed non-toxic to humans and all common domestic animal species

It is visually similar to multiple highly toxic related Apiaceae species, so full identification confirmation is required before consumption

Its leaves are usable as moderate-quality livestock forage, but hard stems are not ideal for stored feed due to poor drying performance

FAQ

Is Cow parsley toxic to Humans?

No known adverse effects from confirmed ingestion. Unusual symptoms after eating wild Apiaceae plants likely indicate toxic lookalike consumption, seek immediate medical care (Non-toxic)

Is Cow parsley toxic to Cats?

No known toxic effects from confirmed ingestion. If vomiting, drooling, or neurological signs develop, contact a vet immediately to rule out toxic lookalike ingestion (Non-toxic)

Is Cow parsley toxic to Dogs?

No known toxic effects from confirmed ingestion. If vomiting, diarrhea, or seizures occur, contact a vet immediately to rule out toxic lookalike ingestion (Non-toxic)

Is Cow parsley toxic to Horses?

No known toxic effects from confirmed ingestion. If unusual distress, colic, or neurological signs develop, contact a vet immediately to rule out toxic lookalike ingestion (Non-toxic)

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Toxicity Details

Humans

Non-toxic

No known adverse effects from confirmed ingestion. Unusual symptoms after eating wild Apiaceae plants likely indicate toxic lookalike consumption, seek immediate medical care

Cats

Non-toxic

No known toxic effects from confirmed ingestion. If vomiting, drooling, or neurological signs develop, contact a vet immediately to rule out toxic lookalike ingestion

Dogs

Non-toxic

No known toxic effects from confirmed ingestion. If vomiting, diarrhea, or seizures occur, contact a vet immediately to rule out toxic lookalike ingestion

Horses

Non-toxic

No known toxic effects from confirmed ingestion. If unusual distress, colic, or neurological signs develop, contact a vet immediately to rule out toxic lookalike ingestion

Toxicity Snapshot

Toxic PartsNo plant parts are known to be toxic. Leaves are moderate-quality forage, while hard woody stems are difficult to dry for feed use

Exposure RouteOral ingestion is the only relevant exposure route; no toxic effects are recorded for any exposure route for this species

Toxic CompoundsNo toxic phytochemicals have been identified in this species

First Aid & Prevention

First 30 Minutes

• If ingestion of suspected cow parsley occurs, first attempt to confirm plant identity to rule out toxic lookalikes
• If identity is confirmed as cow parsley, monitor for any unusual (unlikely) discomfort for 24 hours
• If identity is unconfirmed, follow first aid protocols for unknown Apiaceae ingestion per medical/vet guidance

Contact Vet Immediately

• If the ingested plant cannot be 100% confirmed as cow parsley
• If any adverse symptoms (vomiting, diarrhea, neurological signs, colic) develop after ingestion
• If large amounts of unidentified wild Apiaceae plant material were consumed

Prevention

• Learn to distinguish cow parsley from toxic lookalike species before foraging or grazing livestock in affected areas
• Remove toxic Apiaceae lookalikes from pastures and residential yards to reduce accidental ingestion risk
• Never consume any wild Apiaceae plant unless identification is confirmed by a trained plant expert

Treatment & Prognosis

• No specific treatment is required if cow parsley is confirmed as the ingested plant
• If misidentification with a toxic Apiaceae species is confirmed, follow treatment protocols for that specific toxic plant
• Provide general supportive care for any mild transient discomfort as needed

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Professional Toxicology

Scientific NameAnthriscus sylvestris (L.) Hoffm.

AliasesWild chervil、Wild beaked parsley、Keck、Mother-die、Chaerophyllum sylvestre L.、Chaerefolium sylvestre Sch. & Th.

Toxicity Grade

HumansNon-toxic

CatsNon-toxic

DogsNon-toxic

HorsesNon-toxic

Target Organs

No organ systems are known to be harmed by ingestion of this plant

Mechanism of Action

• No toxic mechanism is documented for this species, as it is confirmed non-toxic to humans and common domestic animals

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: Non-toxic; leaves are classified as moderate-quality forage

Sheep and goats: No adverse effects reported; stems are rarely consumed due to hard texture

Small companion mammals: No documented toxicity, but untested for regular feed use

Confusion Risk

The following plants look similar and may be confused:

Golden chervil Chaerophyllum aureum

Visually similar non-toxic species; distinguished by its distinct yellow mature fruit

Rough chervil Chaerophyllum temulum

Visually similar moderate toxicity species; identified by bristly stems and spotted leaf stalks

Poison hemlock Conium maculatum

Visually similar severe toxicity species; distinguished by purple spots on stems and foul mouse-like odor when crushed

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Related Toxic Plants

Heracleum mantegazzianum

High toxicity

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Data Sources

1. CliniTox (Universität Zürich)

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