Safety verdict
Consulted references classify the plant as toxic or irritating for that pet type.
Pet ingestion lookup
My dog ate Autumn Crocus - what should I do?
Colchicum autumnale
Potentially toxic
Contact your veterinarian or an animal poison-control resource now, especially if any amount was chewed or swallowed.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Signs to watch for
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.
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.
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.
Sources: ASPCA, Pet Poison Helpline (no home first-aid; emergency veterinary care required).
Poison-control resources
This page summarizes source-bound plant-safety information and is not veterinary advice.