Is Delphinium Toxic to Cats?

Yes — Delphinium is severely toxic to cats

Delphinium (and its annual relative Larkspur) contain neuromuscular blocking alkaloids. Young plants and seeds are most toxic. A common cottage garden flower that is extremely dangerous to pets. Known to kill livestock.

Symptoms in Cats

If your cat eats Delphinium, watch for these symptoms (onset: 1-6 hours):

Muscle tremors
Stiffness
Weakness
Bloating
Cardiac failure
Respiratory paralysis

What To Do

EMERGENCY. Immediate vet care. Respiratory support may be needed. No specific antidote — supportive care only.

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

Cat-Safe Alternatives to Delphinium

✓ Snapdragon ✓ Sunflower ✓ Zinnia

Quick Facts

Scientific Name

Delphinium spp.

Also Toxic to Dogs?

Yes (severe)

Toxic Compound

Diterpene alkaloids (delphinine, methyllycaconitine)

Toxic Parts

all parts, especially young plants and seeds

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