Showy Daisy Toxic?

Updated 2026-03-06| 5 min read| 3,169 found this helpful

Erigeron speciosus

Showy Daisy is confirmed toxic to cats, dogs, and horses per ASPCA toxicology data

Specific active toxic principles in the plant have not been identified to date

Ingestion only causes mild, self-limiting gastrointestinal symptoms in affected animals

FAQ

Is Showy Daisy toxic to Humans?

No confirmed toxic effects reported in humans; mild gastrointestinal irritation may occur with large-volume ingestion (Non-toxic)

Is Showy Daisy toxic to Cats?

Mild vomiting, diarrhea (Low)

Is Showy Daisy toxic to Dogs?

Mild vomiting, diarrhea (Low)

Is Showy Daisy toxic to Horses?

Mild vomiting, diarrhea (Low)

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Toxicity Details

Humans

Non-toxic

No confirmed toxic effects reported in humans; mild gastrointestinal irritation may occur with large-volume ingestion

Cats

Low

Mild vomiting, diarrhea

Dogs

Low

Mild vomiting, diarrhea

Horses

Low

Mild vomiting, diarrhea

Toxicity Snapshot

Toxic PartsAll plant parts are assumed toxic until further research confirms otherwise, as specific toxic part data is unavailable

Exposure RoutePrimary exposure route is accidental ingestion of flowers, leaves, stems, or seeds by humans or animals

Toxic CompoundsUnidentified (ASPCA)

First Aid & Prevention

First 30 Minutes

• Remove any remaining plant material from the affected individual's mouth immediately
• Rinse the mouth thoroughly with cool, clean water to eliminate residual plant matter
• Monitor closely for onset of vomiting or diarrhea in the first 2-4 hours post-ingestion
• Do not induce vomiting unless explicitly instructed to by a doctor or veterinarian

Contact Vet Immediately

• Vomiting persists for more than 2 hours or becomes severe/bloody
• Diarrhea lasts longer than 12 hours or is paired with lethargy, appetite loss, or dehydration
• The affected animal is juvenile, geriatric, or has pre-existing chronic health conditions

Prevention

• Keep potted Showy Daisy out of reach of indoor pets, and remove wild growth from horse grazing areas
• Educate household members and pet owners to recognize the plant and avoid feeding it to animals
• Label residential Showy Daisy plants clearly as toxic to pets if kept in accessible spaces

Treatment & Prognosis

• Supportive care including electrolyte fluid administration to prevent dehydration is standard
• Veterinarians may prescribe anti-emetic medications to control persistent vomiting
• Most cases resolve fully within 24-48 hours with no long-term adverse effects

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Professional Toxicology

Scientific NameErigeron speciosus

AliasesSeaside Daisy、Horseweed、Fleabane

Toxicity Grade

HumansNon-toxic

CatsLow

DogsLow

HorsesLow

Target Organs

Gastrointestinal tract (primary affected organ)

Mechanism of Action

• Toxic mechanism of action is currently unknown, as active harmful compounds have not been isolated

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle, sheep, goats: Low toxicity assumed; mild gastrointestinal upset is expected if ingested, no severe adverse events reported to date

Small companion mammals (rabbits, guinea pigs): Potential for mild gastrointestinal upset post-ingestion; monitor closely for dehydration if consumption is confirmed

Confusion Risk

The following plants look similar and may be confused:

Common Daisy Bellis perennis

Visually similar due to matching white-petaled, yellow-centered composite flowers; key difference is Showy Daisy grows up to 3ft tall, while common daisy only reaches 6in maximum height

Oxeye Daisy Leucanthemum vulgare

Nearly identical flower morphology; Showy Daisy has narrower, hairier leaves and prefers dry upland habitats, while oxeye daisy thrives in moist low-lying areas

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Related Toxic Plants

Common Ragwort

Jacobaea vulgaris

High toxicity; causes irreversible liver damage in all grazing animals if ingested repeatedly

Garden Chrysanthemum

Chrysanthemum spp.

Low to moderate toxicity; causes gastrointestinal upset and contact dermatitis in pets and humans

Common Tansy

Tanacetum vulgare

Moderate toxicity; causes seizures and liver damage if ingested in large quantities

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Data Sources

1. ASPCA Animal Poison Control

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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