Poison Sumac Toxic?

Updated 2026-03-06| 4 min read| 2,622 found this helpful

Toxicodendron species

Contains urushiol, the primary irritant that causes immune-mediated allergic reactions in humans

Classified as non-toxic to cats, dogs, and horses, with no consistent adverse effects reported in these species

Easily confused with other urushiol-containing Toxicodendron species including poison ivy and poison oak

FAQ

Is Poison Sumac toxic to Humans?

Allergic contact dermatitis: localized redness, itching, blistering, swelling of exposed skin; severe reactions may include respiratory distress if smoke from burned plants is inhaled (Moderate)

Is Poison Sumac toxic to Cats?

No known consistent adverse effects; rare mild, temporary skin irritation may occur in highly sensitive individuals (Non-toxic)

Is Poison Sumac toxic to Dogs?

No known consistent adverse effects; rare mild, temporary skin irritation may occur in highly sensitive individuals (Non-toxic)

Is Poison Sumac toxic to Horses?

No known consistent adverse effects; rare mild, temporary skin irritation may occur in highly sensitive individuals (Non-toxic)

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Toxicity Details

Humans

Moderate

Allergic contact dermatitis: localized redness, itching, blistering, swelling of exposed skin; severe reactions may include respiratory distress if smoke from burned plants is inhaled

Cats

Non-toxic

No known consistent adverse effects; rare mild, temporary skin irritation may occur in highly sensitive individuals

Dogs

Non-toxic

No known consistent adverse effects; rare mild, temporary skin irritation may occur in highly sensitive individuals

Horses

Non-toxic

No known consistent adverse effects; rare mild, temporary skin irritation may occur in highly sensitive individuals

Toxicity Snapshot

Toxic PartsAll plant parts (leaves, stems, roots, berries, sap) contain toxic irritant oils

Exposure RouteDirect skin contact with plant material, contact with urushiol-contaminated clothing/tools, inhalation of smoke from burned plant material

Toxic CompoundsUrushiol

First Aid & Prevention

First 30 Minutes

• For human skin exposure: Wash affected area immediately with cold water and grease-cutting soap to remove residual urushiol
• Remove all contaminated clothing and wash separately to avoid secondary exposure to other people or pets
• If eye/mucous membrane exposure occurs, flush continuously with clean running water for at least 15 minutes

Contact Vet Immediately

• Your pet develops persistent skin redness, swelling, or itching 24+ hours after plant contact
• Your pet shows signs of gastrointestinal distress (vomiting, diarrhea) after ingesting large volumes of plant material

Prevention

• Learn to identify Poison Sumac and related Toxicodendron species to avoid contact during outdoor activities
• Wear long sleeves, waterproof gloves, and closed-toe shoes when working in areas where these plants grow
• Never burn Poison Sumac, as urushiol particles in smoke can trigger severe respiratory and systemic allergic reactions

Treatment & Prognosis

• For mild human dermatitis: Use calamine lotion, topical hydrocortisone, or oral antihistamines to reduce itching and inflammation
• For severe human reactions (facial swelling, difficulty breathing, widespread blistering): Seek emergency medical care immediately
• For pets with mild skin irritation: Bathe with pet-safe shampoo to remove residual oils, monitor for worsening symptoms

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Professional Toxicology

Scientific NameToxicodendron species

AliasesPoison Ivy (closely related similar species)、Poison Oak (closely related similar species)

Toxicity Grade

HumansModerate

CatsNon-toxic

DogsNon-toxic

HorsesNon-toxic

Target Organs

SkinMucous membranesRespiratory tract

Mechanism of Action

• Urushiol binds to skin cell proteins upon contact, triggering a type IV delayed hypersensitivity immune reaction in sensitized humans

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle, sheep, goats: Naturally resistant to urushiol effects, no adverse effects reported from exposure or consumption

Wild birds: Poison Sumac berries are a safe, common food source for many native North American bird species

Confusion Risk

The following plants look similar and may be confused:

Poison Ivy Toxicodendron radicans

Same genus, contains urushiol; grows as a vine with clusters of 3 leaflets, while Poison Sumac grows as a shrub/tree with 7-13 pointed leaflets per stem

Poison Oak Toxicodendron diversilobum

Same genus, contains urushiol; has lobed, oak-like leaves and grows primarily in western North America, while Poison Sumac is most common in eastern North American wetlands

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Related Toxic Plants

Poison Ivy

Toxicodendron radicans

Moderate toxicity to humans, non-toxic to most companion animals

Poison Oak

Toxicodendron diversilobum

Moderate toxicity to humans, non-toxic to most companion animals

Brazilian Peppertree

Schinus terebinthifolia

Low to moderate toxicity, causes skin irritation and gastrointestinal upset in humans and animals

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Data Sources

1. ASPCA Animal Poison Control

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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