Is Autumn Crocus Toxic to Dogs?

Yes — Autumn Crocus is severely toxic to dogs

Autumn Crocus is extremely dangerous — NOT to be confused with the harmless Spring Crocus. Colchicine suppresses bone marrow and causes multi-organ failure. The delay between ingestion and serious symptoms (2-5 days) means owners may not connect the two. Any suspected ingestion requires immediate emergency care.

Symptoms in Dogs

If your dog eats Autumn Crocus, watch for these symptoms (onset: 2-24 hours (delayed organ failure at 2-5 days)):

Bloody vomiting
Severe diarrhea
Bone marrow suppression
Multi-organ failure
Death

What To Do

EMERGENCY. Immediate vet care. No antidote exists. Aggressive supportive care required. Delayed symptoms can appear days later even if pet seems fine initially.

This is a veterinary emergency for dogs. Call your vet or ASPCA Poison Control (888) 426-4435 immediately.

Dog-Safe Alternatives to Autumn Crocus

✓ Spring Crocus ✓ Pansy ✓ Zinnia

Quick Facts

Scientific Name

Colchicum autumnale

Also Toxic to Cats?

Yes (severe)

Toxic Compound

Colchicine

Toxic Parts

all parts, especially bulbs and seeds

Sources: ASPCA Animal Poison Control Center, Pet Poison Helpline. View full Autumn Crocus toxicity profile.