Sweetheart Ivy Toxic?

Updated 2026-03-06| 3 min read| 1,182 found this helpful

All plant parts are toxic, with leaves carrying higher toxicity than berries for all affected species

Triterpenoid saponins (hederagenin) are the primary toxic compound driving adverse effects

Ingestion typically causes gastrointestinal distress, while large doses may trigger neurological symptoms

FAQ

Is Sweetheart Ivy toxic to Humans?

Salivation, excitation, vomiting, diarrhea, abdominal cramps, and paralysis in severe cases; ivy odor may be present on breath post-ingestion (Moderate)

Is Sweetheart Ivy toxic to Cats?

Vomiting, abdominal pain, excessive salivation, diarrhea (Moderate)

Is Sweetheart Ivy toxic to Dogs?

Vomiting, abdominal pain, excessive salivation, diarrhea (Moderate)

Is Sweetheart Ivy toxic to Horses?

Vomiting, abdominal pain, excessive salivation, diarrhea (Moderate)

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Toxicity Details

Humans

Moderate

Salivation, excitation, vomiting, diarrhea, abdominal cramps, and paralysis in severe cases; ivy odor may be present on breath post-ingestion

Cats

Moderate

Vomiting, abdominal pain, excessive salivation, diarrhea

Dogs

Moderate

Vomiting, abdominal pain, excessive salivation, diarrhea

Horses

Moderate

Vomiting, abdominal pain, excessive salivation, diarrhea

Toxicity Snapshot

Toxic PartsLeaves, black berries (especially the very bitter pulp), stems, plant sap

Exposure RouteIngestion of any toxic plant part, skin contact with plant sap

Toxic CompoundsTriterpenoid saponins (hederagenin); α-hederin; β-hederin; falcarinol; didehydrofalcarinol; sesquiterpenes

First Aid & Prevention

First 30 Minutes

• Rinse mouth thoroughly with clean water to remove remaining plant residue if ingested
• Wash affected skin with mild soap and running water for 10-15 minutes if sap contact occurs
• Do not induce vomiting unless explicitly instructed by a medical or veterinary professional

Contact Vet Immediately

• Affected animal exhibits severe symptoms including seizures, paralysis, or persistent vomiting/diarrhea
• A large quantity of the plant has been ingested by a small pet, child, or vulnerable individual
• Symptoms persist for more than 2 hours after initial exposure

Prevention

• Keep plants out of reach of pets, livestock, and young children to avoid accidental ingestion
• Wear protective gloves when handling the plant to avoid skin irritation from sap
• Clearly label plants kept in homes or gardens to prevent accidental consumption

Treatment & Prognosis

• Administer decontamination measures such as activated charcoal under professional guidance
• Provide symptomatic supportive care including fluid therapy to address dehydration from vomiting/diarrhea
• Monitor for neurological symptoms including cramps and paralysis, and treat as clinically indicated

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Professional Toxicology

Scientific NameHedera helix

AliasesEnglish Ivy、Glacier Ivy、Needlepoint Ivy、Branching Ivy、California Ivy

Toxicity Grade

HumansModerate

CatsModerate

DogsModerate

HorsesModerate

Target Organs

Gastrointestinal tractNervous systemSkin

Mechanism of Action

• Saponin compounds irritate gastrointestinal mucosa, leading to digestive distress and fluid loss

• Falcarinol and related compounds contribute to skin irritation and potential neurotoxic effects in large doses

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: Documented cases of disorientation, excitation, abnormal vocalization, and characteristic ivy odor on breath and milk for up to 3 days post-ingestion, with full recovery after supportive care

Roe deer: Confirmed cases of ivy poisoning reported in wild roe deer populations

Confusion Risk

The following plants look similar and may be confused:

Virginia Creeper Parthenocissus sp.

Visually similar due to shared climbing growth habit and lobed foliage; Virginia Creeper has distinct 5-leaflet clusters, while Sweetheart Ivy has single 3-5 lobed leaves, and is only weakly toxic

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Related Toxic Plants

Umbrella Tree

Schefflera actinophylla

Moderately toxic

Canary Island Ivy

Hedera canariensis

Moderately toxic

Devil's Club

Oplopanax horridus

Moderately toxic

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Data Sources

1. ASPCA Animal Poison Control

2. 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.