Hairy alpenrose Toxic?

Updated 2026-03-06| 5 min read| 3,007 found this helpful

Rhododendron hirsutum L.

Hairy alpenrose is confirmed non-toxic per Gessner's 1953 independent toxicology assessment

This species belongs to the Ericaceae family, which includes many widely documented toxic Rhododendron varieties

There is significant risk of misidentification between this species and other potentially toxic Rhododendron species

FAQ

Is Hairy alpenrose toxic to Humans?

No toxicity symptoms in humans have been documented for this species. Seek immediate medical care if unexpected adverse effects occur after exposure. (Non-toxic)

Is Hairy alpenrose toxic to Cats?

No confirmed feline toxicity reported. Monitor for unusual behavior, and contact a veterinarian if symptoms like vomiting or lethargy develop. (Non-toxic)

Is Hairy alpenrose toxic to Dogs?

No confirmed canine toxicity reported. Monitor for unusual behavior, and contact a veterinarian if symptoms like vomiting or lethargy develop. (Non-toxic)

Is Hairy alpenrose toxic to Horses?

No confirmed equine toxicity reported. Monitor for unusual behavior, and contact a veterinarian if symptoms like refusal to eat or lethargy develop. (Non-toxic)

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Toxicity Details

Humans

Non-toxic

No toxicity symptoms in humans have been documented for this species. Seek immediate medical care if unexpected adverse effects occur after exposure.

Cats

Non-toxic

No confirmed feline toxicity reported. Monitor for unusual behavior, and contact a veterinarian if symptoms like vomiting or lethargy develop.

Dogs

Non-toxic

No confirmed canine toxicity reported. Monitor for unusual behavior, and contact a veterinarian if symptoms like vomiting or lethargy develop.

Horses

Non-toxic

No confirmed equine toxicity reported. Monitor for unusual behavior, and contact a veterinarian if symptoms like refusal to eat or lethargy develop.

Toxicity Snapshot

Toxic PartsNo toxic parts recorded per Gessner (1953); no confirmed toxic components have been identified for this species to date.

Exposure RoutePotential exposure routes include accidental ingestion of plant material or skin contact with sap; no confirmed adverse effects from either route are reported for this species.

Toxic CompoundsNo toxic secondary metabolites specifically documented for this species in available peer-reviewed research

First Aid & Prevention

First 30 Minutes

• Rinse mouth thoroughly with clean water to remove any remaining plant material if ingestion occurs
• Monitor the exposed person/animal for unusual symptoms including nausea, vomiting, or irritation for 24 hours post-exposure
• Collect a sample of the plant for formal identification if symptoms develop to rule out toxic Rhododendron species

Contact Vet Immediately

• If the exposed animal displays persistent vomiting, diarrhea, lethargy, or difficulty breathing
• If the ingested plant cannot be definitively identified as Hairy alpenrose (risk of confusion with toxic Rhododendron variants)
• If large quantities of plant material were consumed, even if no immediate symptoms are visible

Prevention

• Learn to identify Hairy alpenrose's distinctive ciliate leaf edges to distinguish it from toxic Rhododendron species
• Keep unidentified Rhododendron plants out of reach of children, pets, and grazing livestock
• Confirm species identification with a qualified botanist before allowing animals to graze in areas where Rhododendron species grow

Treatment & Prognosis

• Provide supportive care including fluid therapy and symptom management if adverse reactions occur
• Administer activated charcoal only if advised by a medical/veterinary professional, for large ingestions within 2 hours of presentation
• Treat any allergic reactions with prescribed antihistamines or topical creams as recommended by a healthcare provider

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Professional Toxicology

Scientific NameRhododendron hirsutum L.

AliasesCiliate alpenrose、Stone rose、Ciliate rhododendron、Hairy rhododendron、Shaggy rhododendron、Hairy alpine rhododendron

Toxicity Grade

HumansNon-toxic

CatsNon-toxic

DogsNon-toxic

HorsesNon-toxic

Target Organs

No target organs for toxicity identified, as no confirmed adverse effects have been recorded for this species

Mechanism of Action

• No toxic mechanism has been identified for this species, as no toxic components have been documented in available research

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Small companion mammals (rabbits, guinea pigs, hamsters): No confirmed toxicity reported; monitor for adverse effects if ingestion occurs

Ruminant livestock (cattle, sheep, goats): No confirmed toxicity reported; avoid access to unconfirmed Rhododendron species to prevent accidental poisoning

Confusion Risk

The following plants look similar and may be confused:

Other Rhododendron species Multiple Rhododendron spp.

Visually similar in foliage and flower structure to most other Rhododendron varieties, many of which are toxic. Hairy alpenrose can be distinguished by the fine glandular hairs along its leaf margins.

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Related Toxic Plants

Common pontic rhododendron

Rhododendron ponticum

High toxicity

Mountain laurel

Kalmia latifolia

Moderate to High toxicity

Common azalea

Rhododendron indicum

Moderate 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.

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