Horseshoe pelargonium Toxic?

Updated 2026-03-06| 4 min read| 1,069 found this helpful

Toxins have been confirmed present in this plant, though no animal poisoning cases are recorded in scientific literature to date

Horseshoe pelargonium is explicitly not suitable for use as feed for any companion animals or livestock

Exposure risk is low, but medical consultation is recommended if large quantities are ingested

FAQ

Is Horseshoe pelargonium toxic to Humans?

No confirmed symptoms reported in literature; mild gastrointestinal upset may occur if large quantities are ingested as a precaution (Low)

Is Horseshoe pelargonium toxic to Cats?

No confirmed feline poisoning symptoms reported; mild digestive irritation may occur if large amounts are consumed (Low)

Is Horseshoe pelargonium toxic to Dogs?

No confirmed canine poisoning symptoms reported; mild digestive irritation may occur if large amounts are consumed (Low)

Is Horseshoe pelargonium toxic to Horses?

No confirmed equine poisoning symptoms reported; mild digestive irritation may occur if large amounts are consumed (Low)

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Toxicity Details

Humans

Low

No confirmed symptoms reported in literature; mild gastrointestinal upset may occur if large quantities are ingested as a precaution

Cats

Low

No confirmed feline poisoning symptoms reported; mild digestive irritation may occur if large amounts are consumed

Dogs

Low

No confirmed canine poisoning symptoms reported; mild digestive irritation may occur if large amounts are consumed

Horses

Low

No confirmed equine poisoning symptoms reported; mild digestive irritation may occur if large amounts are consumed

Toxicity Snapshot

Toxic PartsAll plant parts contain detectable toxins; no specific toxic sub-parts are isolated in available data

Exposure RouteIngestion is the primary confirmed exposure route; mild skin irritation is possible for sensitive individuals as a general precaution

Toxic CompoundsUnidentified toxins confirmed present, specific chemical composition not documented in available dataset

First Aid & Prevention

First 30 Minutes

• If ingested, immediately remove any remaining plant material from the mouth of the exposed person/animal
• Rinse the mouth thoroughly with clean, cool water after exposure
• Monitor for signs of discomfort, vomiting or diarrhea for 2 hours post-ingestion

Contact Vet Immediately

• If a companion animal or livestock ingests large quantities of the plant
• If unusual symptoms including lethargy, vomiting or diarrhea develop after exposure
• If a small pet (cat, small dog, rabbit) ingests any amount of the plant

Prevention

• Keep potted plants out of reach of companion animals
• Do not plant this species in pastures or grazing areas accessible to livestock
• Dispose of pruned plant material in sealed bins where animals cannot access it

Treatment & Prognosis

• Supportive care is the primary recommended treatment for ingestion events
• Gastrointestinal protectants may be administered if irritation symptoms develop
• No specific antidote is known for this plant's toxins

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Professional Toxicology

Scientific NamePelargonium zonale (L.) L'Her.

AliasesGeranium zonale L.、Zonal-Pelargonie、Géranium zoné、Geranio zonale

Toxicity Grade

HumansLow

CatsLow

DogsLow

HorsesLow

Target Organs

No specific target organs identified; mild gastrointestinal tract irritation is the only suspected adverse effect if ingested in large quantities

Mechanism of Action

• Toxin mechanism of action is not documented in available scientific literature

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Livestock (cattle, sheep, goats): No confirmed poisoning cases reported, but the plant is explicitly unsuitable for use as feed

Small companion mammals (rabbits, guinea pigs, hamsters): No documented adverse effects, but ingestion is not recommended as a safety precaution

Confusion Risk

The following plants look similar and may be confused:

Other Pelargonium species Pelargonium spp.

Visually similar growth habit and flower structure; the key distinguishing feature of Pelargonium zonale is the distinct horseshoe-shaped dark marking on its leaves, which is absent in most other common Pelargonium varieties

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Related Toxic Plants

Herb Robert

Geranium robertianum

Low toxicity, mild gastrointestinal irritant

Rose Scented Geranium

Pelargonium graveolens

Low toxicity, may cause mild skin irritation and digestive upset

Common Stork's Bill

Erodium cicutarium

Low toxicity, mild adverse effects reported in livestock if consumed in large quantities

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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.