Is Crocus Toxic to Dogs?

☠️ ToxicSeverity: Mild

✅ Cross-checked against veterinary poison-control guidance · Oct 2026 audit

⚠️ Educational info only. If your pet just chewed something and looks unwell, skip the reading and call your vet or Pet Poison Helpline (US): (855) 764-7661.

Spring crocus is mildly toxic to dogs, causing drooling and GI upset — but the similar-looking autumn crocus contains colchicine and is a severe emergency.

Also known as: Spring Crocus, Dutch Crocus, Crocus vernus · Crocus vernus (spring) — see warning on Colchicum autumnale

What makes it toxic

Spring crocus (Crocus vernus) carries mild GI irritants. Autumn crocus (Colchicum autumnale) carries colchicine, which halts cell division and causes multi-organ failure; the corms are the most toxic part.

Warning signs to watch for

Spring crocus: drooling, vomiting, diarrhea within hours. Autumn crocus: violent vomiting, bloody diarrhea, kidney and liver failure, bone marrow suppression over 1–3 days.

What to do if your dog eats it

For spring crocus nibbles, remove plant material, offer water and monitor. If the species is unknown or autumn crocus is possible, go to the vet immediately — early decontamination is critical for colchicine.

Common questions

My dog dug up bulbs in the flower bed — which crocus is it?

Check the packet, label or an ID app first. Crocus corms planted in fall are usually spring crocus, but Colchicum corms look similar and are far more dangerous.

Can a dog recover from autumn crocus poisoning?

Recovery is possible with immediate aggressive veterinary care, but colchicine poisoning is frequently fatal when treatment is delayed. That is why species identification matters so much.

More plants checked for dogs

Pothos☠️ ToxicYes, pothos is toxic to dogs. Chewing any part of the vine releases calcium oxalate crystals tha Aloe Vera⚠️ Mildly ToxicAloe vera is mildly to moderately toxic to dogs. The skin and latex layer of the leaf contain co Spider Plant✅ Non-ToxicNo, spider plants are non-toxic to dogs. A dog that nibbles the arching leaves is not at risk of Easter Lily⚠️ Mildly ToxicEaster lilies are only mildly toxic to dogs — they usually cause stomach upset, not the fatal ki Sago Palm☠️ ToxicYes — sago palm is severely toxic to dogs, with a documented fatality rate around 50% when untre Boston Fern✅ Non-ToxicNo, Boston ferns are non-toxic to dogs. Chewing a frond will not poison your dog.

This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.