Is Skunk Cabbage Poisonous? – Toxicity Guide

Yes. Skunk cabbage is poisonous to humans, dogs, cats, and horses. All parts of the plant contain insoluble calcium oxalate crystals that cause immediate tissue irritation if chewed or ingested. Do not eat any part of this plant.

What Is Skunk Cabbage?

Skunk cabbage is a perennial wetland plant that emerges early in spring, sometimes pushing through snow. It belongs to the Araceae family and is native to wetland areas across North America. Two varieties exist:

• Eastern skunk cabbage (Symplocarpus foetidus) has a purple-red spathe and grows throughout eastern and central North America.
• Western skunk cabbage (Lysichiton americanus) has a distinctive yellow spathe and is found in the Pacific Northwest and parts of Alaska.

The plant gets its name from the odor released when stems or leaves are crushed: a smell often described as similar to skunk or rotting meat. The flower structure is distinctive: a hooded leaf called a spathe surrounds a fleshy spike called a spadix.

Skunk cabbage is also remarkable for its ability to generate heat, which allows it to melt surrounding snow and emerge during late winter thaw.

Why Is Skunk Cabbage Poisonous?

The toxic principle is insoluble calcium oxalate crystals, also called raphides. These are needle-like crystals embedded throughout the plant’s tissue. When you chew or bite the plant, the crystals are released and penetrate oral and gastrointestinal tissue, causing immediate irritation and pain.

This toxin family is the same found in plants like philodendron, peace lily, and dieffenbachia. Insoluble calcium oxalates are not absorbed into the bloodstream in meaningful amounts, which is why they cause localized damage rather than systemic poisoning. This is different from soluble oxalates, which can be absorbed and lead to kidney stone formation with repeated exposure.

Toxicity to Humans

If you chew or swallow skunk cabbage, you will feel it right away. Symptoms typically include:

• Burning sensation in the mouth, tongue, and lips
• Swelling of the tongue, lips, and oral cavity
• Excessive drooling
• Vomiting
• Difficulty swallowing

In rare cases, significant swelling of the upper airway has been reported, which can make breathing difficult. Kidney irritation and a risk of kidney stone formation have been noted with repeated or substantial exposure, according to sources including Cornell Botanic Gardens.

Fatal cases from skunk cabbage ingestion are extremely rare. The reason is straightforward: the immediate pain from the calcium oxalate crystals usually stops further eating before a dangerous dose is consumed.

Historical medicinal use

Indigenous peoples used parts of the plant medicinally, and early European medical texts mention Dracontium (an old name for skunk cabbage) as a treatment for various conditions. These uses were never as a food source, and the plant should not be consumed under any circumstances today.

Toxicity to Pets

Dogs and cats react to skunk cabbage ingestion with the same oral irritation humans experience. Watch for these signs:

• Pawing at the mouth
• Drooling more than usual
• Oral pain and reluctance to eat
• Vomiting
• Difficulty swallowing

Horses can also be poisoned. They are not typical vomiters, so vomiting in a horse after plant ingestion is a notable sign that warrants immediate veterinary attention.

In all animals, airway swelling that causes breathing difficulty is possible but rare.

Deer are the exception

Deer can eat skunk cabbage without ill effect. Their digestive systems handle calcium oxalate crystals differently, neutralizing the toxin before it causes harm. This is not true for dogs, cats, horses, or humans.

What to Do If Ingestion Is Suspected

1. Do not induce vomiting unless a medical or veterinary professional specifically directs you to do so. Forcing vomiting can cause additional damage if the plant material is still irritating the esophagus or airway.
2. Rinse the mouth with water if the person or animal is able to tolerate it.
3. Call for help:
   • For humans: Poison Control at 1-800-222-1222 (US)
   • For pets: Pet Poison Helpline at 855-764-7661 or ASPCA Poison Control at 888-426-4435 (note: fees may apply)
   • Or contact your veterinarian or physician directly
4. Seek immediate care if there is any breathing difficulty, prolonged vomiting, or significant swelling.

Safe Handling and Garden Context

Wearing gloves when handling skunk cabbage prevents the skin irritation some people experience from the sap. The toxin is not absorbed through intact skin, so brief contact without broken skin is unlikely to cause more than mild irritation.

If you have young children or pets who might chew plants in the garden, skunk cabbage is not a suitable addition to your landscape. However, some gardeners in rural or larger properties intentionally plant it as a natural deterrent to squirrels, raccoons, and other mammals, while still attracting pollinators. Bees and other insects are not affected by the toxin and visit the flowers without harm.

Frequently Asked Questions

Can you die from eating skunk cabbage? Fatal cases are extremely rare. The immediate pain from calcium oxalate crystals typically prevents someone from eating enough to cause serious harm. That said, significant ingestion requires prompt medical attention.

Is the Western (yellow) variety less toxic than the Eastern (purple)? No. Both varieties contain the same toxic principle, insoluble calcium oxalate crystals, throughout all plant parts. Neither is safe to eat.

My child or pet ate a small amount. Should I worry? Small ingestations in humans and pets usually cause localized oral irritation that resolves without serious consequences. Call Poison Control or your vet to confirm whether observation or an office visit is appropriate based on the amount consumed and symptoms developing.

How is this different from true cabbage? It is not related to true cabbage (Brassicaceae family). Skunk cabbage belongs to the Araceae family and is unrelated as a food plant. True cabbage is safe to eat; skunk cabbage is not.

Are there lookalikes I should watch for? The two skunk cabbage varieties are distinctive: the purple spathe of the Eastern and the yellow spathe of the Western are not easily confused with edible plants in their wetland habitats. However, if you are foraging for wild plants, positive identification by an expert is essential before consumption of any wild plant.