Sun spurge Toxic?

Updated 2026-03-06| 3 min read| 3,475 found this helpful

All plant parts containing milky latex are toxic, and active terpene compounds remain dangerous even after storage or drying.

Ingestion triggers severe gastrointestinal, neurological, and cardiac symptoms, while eye contact causes painful corneal and conjunctival inflammation.

Toxins are excreted in the milk of exposed cows, making milk from affected animals unsafe for consumption.

FAQ

Is Sun spurge toxic to Humans?

Bloody diarrhea, vomiting, colic, dizziness, seizures, circulatory collapse, abnormal heart rhythm, bloody urine; eye contact leads to severe conjunctivitis and corneal inflammation (High)

Is Sun spurge toxic to Cats?

No species-specific data documented; expected effects include oral irritation, vomiting, diarrhea, and potential systemic neurological or cardiac effects (High)

Is Sun spurge toxic to Dogs?

No species-specific data documented; expected effects include oral irritation, vomiting, diarrhea, and potential systemic neurological or cardiac effects (High)

Is Sun spurge toxic to Horses?

No species-specific data documented; expected effects include oral irritation, colic, diarrhea, and potential systemic neurological or cardiac effects (High)

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Toxicity Details

Humans

High

Bloody diarrhea, vomiting, colic, dizziness, seizures, circulatory collapse, abnormal heart rhythm, bloody urine; eye contact leads to severe conjunctivitis and corneal inflammation

Cats

High

No species-specific data documented; expected effects include oral irritation, vomiting, diarrhea, and potential systemic neurological or cardiac effects

Dogs

High

No species-specific data documented; expected effects include oral irritation, vomiting, diarrhea, and potential systemic neurological or cardiac effects

Horses

High

No species-specific data documented; expected effects include oral irritation, colic, diarrhea, and potential systemic neurological or cardiac effects

Toxicity Snapshot

Toxic PartsAll plant parts that contain milky latex sap; the plant is rarely consumed voluntarily due to its sharp, unpleasant odor

Exposure RouteIngestion of plant material, skin contact with latex sap, eye contact with latex sap, consumption of milk from cows that have grazed on the plant

Toxic CompoundsIngenol esters; Phorbol esters; Euphol

First Aid & Prevention

First 30 Minutes

• For ingestion: Rinse mouth thoroughly with clean water; do not induce vomiting unless explicitly directed by a healthcare provider or veterinarian
• For skin contact: Immediately wash the affected area with copious amounts of mild soap and cool running water to remove all latex residue
• For eye contact: Flush affected eyes with sterile saline or clean running water for 15+ minutes, holding eyelids open to ensure full irrigation

Contact Vet Immediately

• Confirmed or suspected ingestion of sun spurge by any pet, livestock, or child
• Development of symptoms including vomiting, bloody diarrhea, seizures, abnormal heart rate, or difficulty breathing after exposure
• Eye exposure with persistent pain, redness, blurry vision, or light sensitivity after initial irrigation

Prevention

• Remove all sun spurge plants from areas accessible to children, pets, and grazing livestock
• Wear waterproof gloves and protective eye gear when handling any Euphorbia species to avoid contact with latex sap
• Do not consume milk from cows that have grazed in areas with confirmed sun spurge growth

Treatment & Prognosis

• Perform decontamination (e.g., activated charcoal administration for recent ingestion) as clinically appropriate
• Provide symptomatic supportive care including fluid therapy, anti-emetics, anti-seizure medication, and continuous cardiac monitoring as needed
• Treat eye exposure with topical anti-inflammatory and antimicrobial medications as prescribed by a qualified healthcare provider or veterinarian

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Professional Toxicology

Scientific NameEuphorbia helioscopia L.

AliasesSonnwend-Wolfsmilch (German)、Euphorbe réveille-matin (French)、Euforbia calenzuola (Italian)

Toxicity Grade

HumansHigh

CatsHigh

DogsHigh

HorsesHigh

Target Organs

Gastrointestinal tractEyesSkinCardiovascular systemNervous systemKidneys

Mechanism of Action

• Irritant diterpene esters (phorbol, ingenol) cause direct tissue damage to mucous membranes, skin, and eyes on contact

• Systemic absorption of terpenes disrupts normal cardiac rhythm, nervous system function, and gastrointestinal mucosal integrity

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: Ingestion (including of contaminated dried feed) causes colic, vomiting, bloody diarrhea, bloody urine, muscle tremors, and dizziness; toxins are excreted in milk, which may appear reddish or have an altered taste

Sheep: Ingestion of fresh plant material causes severe swelling and inflammation of the oral mucosa, excessive salivation, and diarrhea; full recovery is typical after moving to a toxin-free pasture

Birds: Extremely highly toxic (+++), ingestion is associated with severe, potentially fatal systemic effects

Confusion Risk

The following plants look similar and may be confused:

Other spurge species Euphorbia spp.

All Euphorbia species produce similar milky latex sap and have overlapping growth habits; key differentiators include leaf shape, flower structure, and mature plant size

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Related Toxic Plants

Euphorbia pulcherrima

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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.