Noble yarrow Toxic?

Updated 2026-03-06| 2 min read| 3,835 found this helpful

Achillea nobilis L.

No documented human or animal poisoning cases from Noble yarrow are recorded in available scientific literature

The plant is not considered suitable for use as feed for any livestock, pet, or working animal species

It may be confused with other Achillea species that can have varied, potentially toxic profiles

FAQ

Is Noble yarrow toxic to Humans?

No reported toxicity symptoms in humans; seek medical care if adverse reactions occur after ingestion or contact (Non-toxic)

Is Noble yarrow toxic to Cats?

No reported feline toxicity symptoms; consult a veterinarian if unusual behavior or illness develops after exposure (Non-toxic)

Is Noble yarrow toxic to Dogs?

No reported canine toxicity symptoms; consult a veterinarian if unusual behavior or illness develops after exposure (Non-toxic)

Is Noble yarrow toxic to Horses?

No reported equine toxicity symptoms; consult a veterinarian if unusual behavior or illness develops after exposure (Non-toxic)

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Toxicity Details

Humans

Non-toxic

No reported toxicity symptoms in humans; seek medical care if adverse reactions occur after ingestion or contact

Cats

Non-toxic

No reported feline toxicity symptoms; consult a veterinarian if unusual behavior or illness develops after exposure

Dogs

Non-toxic

No reported canine toxicity symptoms; consult a veterinarian if unusual behavior or illness develops after exposure

Horses

Non-toxic

No reported equine toxicity symptoms; consult a veterinarian if unusual behavior or illness develops after exposure

Toxicity Snapshot

Toxic PartsNo toxic plant parts confirmed in published research; entire plant is unsuitable for use as animal feed

Exposure RoutePrimary exposure route is ingestion; skin contact may cause mild temporary irritation in sensitive individuals or animals

Toxic CompoundsNo specific toxic compounds associated with this species have been identified in available scientific studies

First Aid & Prevention

First 30 Minutes

• Remove any remaining plant material from the mouth of the exposed person or animal immediately
• Rinse the mouth thoroughly with clean, cool water to remove residual plant matter
• Monitor closely for signs of discomfort, nausea, or allergic reaction for 2 hours post-exposure

Contact Vet Immediately

• If your animal has ingested a large quantity of the plant
• If any unusual symptoms (vomiting, diarrhea, lethargy, skin rashes) develop after exposure
• If you are unable to confirm the plant is Noble yarrow and suspect it may be a more toxic related species

Prevention

• Never feed Noble yarrow to pets, livestock, or working animals
• Accurately identify all Achillea species in grazing areas before allowing livestock access
• Keep potted or cut Noble yarrow out of reach of young children and indoor pets

Treatment & Prognosis

• Provide supportive care targeted to any presented symptoms under professional supervision
• Administer activated charcoal for large recent ingestions only if advised by a medical provider or veterinarian
• Treat contact irritation with topical soothing products or prescribed medications as needed

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Professional Toxicology

Scientific NameAchillea nobilis L.

AliasesNoble milfoil

Toxicity Grade

HumansNon-toxic

CatsNon-toxic

DogsNon-toxic

HorsesNon-toxic

Target Organs

No target organs for toxicity have been identified for this species in available studies

Mechanism of Action

• No specific toxic mechanism for this species has been documented in published research

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle, sheep, goats (livestock): No confirmed poisoning cases reported, but the plant is not recommended as a feed source due to limited safety data

Small pet mammals (rabbits, guinea pigs, hamsters): No toxicity data available; avoid feeding to small mammals to prevent unknown adverse effects

Birds: No documented toxicity cases; avoid providing as forage due to lack of safety information

Confusion Risk

The following plants look similar and may be confused:

Other yarrow species Achillea spp.

Visually similar in feathery leaf structure and clustered flower head appearance; key differences include variations in plant height, flower color, and leaf hair density, and other Achillea species may have confirmed toxicity profiles

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Related Toxic Plants

Common ragwort

Jacobaea vulgaris

Highly toxic, causes irreversible liver damage in humans and animals

Common tansy

Tanacetum vulgare

Moderately toxic, causes gastrointestinal distress and neurological symptoms

Garden chrysanthemum

Chrysanthemum spp.

Low toxicity, causes contact dermatitis and mild gastrointestinal upset

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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.

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