Autumn Crocus — (c) Denis Bastianelli, some rights reserved (CC BY), uploaded by Denis Bastianelli
Photo by (c) Denis Bastianelli, some rights reserved (CC BY), uploaded by Denis BastianelliiNaturalistCC BY
dog safety reference

Is Autumn Crocus safe for dogs?

Colchicum autumnale

The Autumn Crocus is a bulbous perennial known for its late-season blooms that emerge directly from the ground. It contains potent alkaloids that make it highly dangerous if ingested by pets.

ColchicumColchicum autumnaleMeadow SaffronNaked Lady
Light
Full sun to partial shade
Habit
Bulbous perennial
Care
Low

Safety status

Dogs

Potentially toxic

Consulted references classify the plant as toxic or irritating for that pet type.

Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

What this means for your dog

Autumn Crocus is among the most dangerous plants a dog can eat. Every part contains colchicine — concentrated most heavily in the seeds and bulbs — and ingestion can lead to multi-organ failure. This is an emergency, not a wait-and-see.

What to watch for

Early signs are severe drooling, bloody vomiting, and bloody diarrhea. Within hours to days, signs can progress to shock, liver and kidney damage, central-nervous-system effects including seizures, bone-marrow suppression, and respiratory failure. Even a small ingestion can be fatal.

Time window

Clinical signs can be seen within hours of ingestion but may also be delayed for days; the delayed onset is part of what makes colchicine poisoning so dangerous.

When to call the vet

Call immediately. ASPCA Poison Control: (888) 426-4435. Pet Poison Helpline: (855) 764-7661. Then drive to the nearest emergency vet — don't wait for symptoms to appear.

Sources: ASPCA, Pet Poison Helpline (no home first-aid; emergency veterinary care required).

If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.

Dogsconcern notes

Common signs

Severe gastrointestinal distress, bloody vomiting, diarrhea, multi-organ failure, and potential respiratory failure.

Escalation note

The toxins in this plant are highly potent and can be fatal. Immediate veterinary intervention is required if your dog has consumed any portion of this plant.

Safer alternatives

No hand-picked alternatives for this plant yet. You can still pick your own using the Compare button on any other plant.

Source evidence

Kew Plants of the World Online

botanical · 95% reliability

Open source

Accepted botanical name and distribution data for Colchicum autumnale L.

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