Pet safety
Is Fairy Flaxtoxic to cats & dogs?
Linum catharticum
Mildly toxic
Quick verdict — at a glance
- Toxic to cats?
- Yes — mildly
- Toxic to dogs?
- Yes — mildly
- ASPCA classification
- Mildly toxic to pets · botanical name Linum catharticum
Is fairy flax safe for cats and dogs?
Use caution. Fairy Flax is on the mildly-toxic side of the ASPCA list. Most ingestions are short-lived but unpleasant for the pet; the cost-free fix is a placement they can't reach. This classification follows the ASPCA Toxic and Non-Toxic Plant List, the most widely used reference for companion-animal plant safety in the US and the standard most UK vets cite as well. Linum catharticum contains linamarin, a cyanogenic glycoside. Livestock (particularly cattle and sheep) can be poisoned if they consume significant quantities; cyanide released on digestion blocks oxygen delivery to tissues. The plant is reportedly avoided by grazing animals due to bitter taste. No specific ASPCA listing exists for this species; classified as mildly-toxic given the confirmed cyanogenic glycoside content. Pets should be kept away from this plant.
| Pet | Toxic? | Per ASPCA |
|---|---|---|
| Cats | Yes (mild) | Mildly toxic to pets |
| Dogs | Yes (mild) | Mildly toxic to pets |
What happens if a pet eats fairy flax?
Linum catharticum contains linamarin, a cyanogenic glycoside. Livestock (particularly cattle and sheep) can be poisoned if they consume significant quantities; cyanide released on digestion blocks oxygen delivery to tissues. The plant is reportedly avoided by grazing animals due to bitter taste. No specific ASPCA listing exists for this species; classified as mildly-toxic given the confirmed cyanogenic glycoside content. Pets should be kept away from this plant. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to fairy flax, treat it as a suspected ingestion and act on the steps below.
What to do if your pet ate fairy flax
- Remove any plant material from your pet's mouth and move fairy flax out of reach.
- Note how much was eaten and when, and watch for drooling, vomiting, or lethargy.
- Do not induce vomiting unless a vet or poison-control specialist instructs you to.
- Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice.
- Bring a leaf or photo of fairy flax to the appointment so it can be treated correctly.
This page is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide rather than the plant. If you are worried, always contact a vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — do not wait for symptoms to worsen.
Pet-safe alternatives to fairy flax
Want the same look without the risk? These plants are listed as non-toxic to cats and dogs by the ASPCA and have similar care needs:
- Hoya — non-toxic to cats and dogs (care guide)
- Bromeliad — non-toxic to cats and dogs (care guide)
- Christmas cactus — non-toxic to cats and dogs (care guide)
- African violet — non-toxic to cats and dogs (care guide)
Fairy Flax and pets — frequently asked questions
Is fairy flax toxic to cats?
Fairy Flax (Linum catharticum) is mildly toxic to cats according to the ASPCA. Linum catharticum contains linamarin, a cyanogenic glycoside. Livestock (particularly cattle and sheep) can be poisoned if they consume significant quantities; cyanide released on digestion blocks oxygen delivery to tissues. The plant is reportedly avoided by grazing animals due to bitter taste. No specific ASPCA listing exists for this species; classified as mildly-toxic given the confirmed cyanogenic glycoside content. Pets should be kept away from this plant. Keep it out of reach and contact your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 if your cat chews it.
Is fairy flax toxic to dogs?
Per the ASPCA, Fairy Flax (Linum catharticum) is mildly toxic to dogs. Dogs often chew more enthusiastically than cats, so a toxic plant like fairy flax is best removed from the floor and low shelves entirely.
What happens if my pet eats fairy flax?
Linum catharticum contains linamarin, a cyanogenic glycoside. Livestock (particularly cattle and sheep) can be poisoned if they consume significant quantities; cyanide released on digestion blocks oxygen delivery to tissues. The plant is reportedly avoided by grazing animals due to bitter taste. No specific ASPCA listing exists for this species; classified as mildly-toxic given the confirmed cyanogenic glycoside content. Pets should be kept away from this plant. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to fairy flax, treat it as a suspected ingestion and act on the steps below.
What should I do if my cat or dog ate fairy flax?
Stay calm. Remove any remaining plant material from your pet's mouth and take the plant away so they cannot eat more. Note roughly how much was eaten and when. Do not make your pet vomit unless a vet or poison-control specialist tells you to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice. Bringing a photo or a leaf of fairy flax to the appointment helps the vet treat it correctly.
What are pet-safe alternatives to fairy flax?
If you want a similar look without the risk, good non-toxic swaps include hoya, bromeliad, christmas cactus, african violet. All of these are listed as non-toxic to cats and dogs by the ASPCA, so they suit a home where pets have access to your plants.
Full fairy flax care
Pet-safety is one piece of the picture. For light, watering, soil, and troubleshooting, see the complete fairy flax care guide, or browse the full pet-safe plant library to check another plant before you buy it.