Alpine aster Toxic?

Updated 2026-03-06| 4 min read| 4,195 found this helpful
Alpine aster
1

Alpine aster can accumulate high levels of selenium, a toxic substance if consumed in excessive quantities

2

No confirmed poisoning cases for this specific species in cats, dogs, horses or humans have been documented to date

3

The plant is strictly unsuitable for use as feed for any grazing livestock, as related Aster species have caused confirmed livestock poisoning

FAQ

Is Alpine aster toxic to Humans?

No specific symptoms reported for this species; selenium poisoning typically causes gastrointestinal distress, fatigue, and hair/nail brittleness in high-dose exposure (Non-toxic)

Is Alpine aster toxic to Cats?

No specific symptoms reported for this species; selenium poisoning in cats typically causes vomiting, diarrhea, lethargy, and neurological signs in severe cases (Non-toxic)

Is Alpine aster toxic to Dogs?

No specific symptoms reported for this species; selenium poisoning in dogs typically causes gastrointestinal upset, weakness, and rapid breathing in high-dose exposure (Non-toxic)

Is Alpine aster toxic to Horses?

No specific symptoms reported for this species; selenium poisoning in horses typically causes lameness, hair loss, hoof damage, and neurological impairment in severe cases (Low)

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Toxicity Details

Humans
Non-toxic

No specific symptoms reported for this species; selenium poisoning typically causes gastrointestinal distress, fatigue, and hair/nail brittleness in high-dose exposure

Cats
Non-toxic

No specific symptoms reported for this species; selenium poisoning in cats typically causes vomiting, diarrhea, lethargy, and neurological signs in severe cases

Dogs
Non-toxic

No specific symptoms reported for this species; selenium poisoning in dogs typically causes gastrointestinal upset, weakness, and rapid breathing in high-dose exposure

Horses
Low

No specific symptoms reported for this species; selenium poisoning in horses typically causes lameness, hair loss, hoof damage, and neurological impairment in severe cases

Toxicity Snapshot

Toxic PartsAll plant parts may accumulate elevated selenium concentrations depending on soil selenium levels in growing conditions
Exposure RouteIngestion of plant material, especially when consumed as forage by grazing livestock
Toxic CompoundsSelenium (bioaccumulated in plant tissues)

First Aid & Prevention

First 30 Minutes

  • • Immediately remove any remaining plant material from the mouth of the exposed human or animal
  • • Rinse the mouth thoroughly with clean cool water to eliminate residual plant matter
  • • Do not induce vomiting unless explicitly directed to do so by a licensed medical professional or veterinarian

Contact Vet Immediately

  • • If your pet or grazing livestock has consumed a large volume of Alpine aster
  • • If you observe signs of illness including gastrointestinal upset, weakness or lethargy after potential exposure
  • • If you are unable to confirm the identity of the plant consumed by your animal

Prevention

  • • Avoid planting Alpine aster in pastures or areas accessible to grazing livestock or free-roaming pets
  • • Inspect livestock feed regularly to ensure no contamination with Aster species plant material
  • • Learn to identify Alpine aster and related toxic Aster species to reduce accidental exposure risk

Treatment & Prognosis

  • • Provide general supportive care including fluid and electrolyte maintenance as needed
  • • Licensed medical/veterinary professionals may administer selenium chelating agents in confirmed severe toxicity cases
  • • Monitor liver, kidney and neurological function for 24-72 hours after significant exposure
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Professional Toxicology

Scientific NameAster alpinus L.
AliasesAlpen-Aster、Aster des Alpes、Reine-marguerite des Alpes、Astro alpino
Toxicity Grade
HumansNon-toxic
CatsNon-toxic
DogsNon-toxic
HorsesLow
Target Organs
Gastrointestinal tractLiverKidneysNervous systemHoof/hair follicles (in equines)
Mechanism of Action

• Excess ingested selenium disrupts cellular enzyme function and protein synthesis, leading to oxidative damage to tissues and organs

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Grazing livestock (cattle, sheep, goats): Confirmed poisoning cases from related unspecified Aster species have been documented; Alpine aster is not suitable for use as livestock feed
Confusion Risk

The following plants look similar and may be confused:

Other Aster species Aster spp.
Visually similar to Alpine aster in flower shape and foliage morphology; many other Aster species also bioaccumulate selenium and pose equivalent or higher toxicity risks to grazing animals
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Related Toxic Plants

Common Ragwort
Common Ragwort
Jacobaea vulgaris
Highly toxic, causes irreversible liver damage in all animal species and humans
Tansy
Tansy
Tanacetum vulgare
Moderately toxic, causes gastrointestinal distress, seizures and organ damage in high doses
Oxeye Daisy
Oxeye Daisy
Leucanthemum vulgare
Low toxicity, causes mild gastrointestinal upset if ingested in large quantities

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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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