Pet safety
Is Black Spleenworttoxic to cats & dogs?
Asplenium adiantum-nigrum
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 Asplenium adiantum-nigrum
Is black spleenwort safe for cats and dogs?
Mildly. The ASPCA flags black spleenwort as mildly toxic to cats and dogs — a chewing pet gets oral irritation and drooling rather than a medical emergency, but it is still worth a high shelf. 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. Asplenium adiantum-nigrum is not individually listed in the ASPCA Toxic and Non-Toxic Plant database. PFAF notes that a number of ferns as a class may contain carcinogens and thiaminase (a vitamin B-depleting enzyme); until this species is individually evaluated, a mildly-toxic precautionary classification is appropriate. The closely related Asplenium bulbiferum is non-toxic per ASPCA, but cross-species extrapolation is not confirmable.
| Pet | Toxic? | Per ASPCA |
|---|---|---|
| Cats | Yes (mild) | Mildly toxic to pets |
| Dogs | Yes (mild) | Mildly toxic to pets |
What happens if a pet eats black spleenwort?
Asplenium adiantum-nigrum is not individually listed in the ASPCA Toxic and Non-Toxic Plant database. PFAF notes that a number of ferns as a class may contain carcinogens and thiaminase (a vitamin B-depleting enzyme); until this species is individually evaluated, a mildly-toxic precautionary classification is appropriate. The closely related Asplenium bulbiferum is non-toxic per ASPCA, but cross-species extrapolation is not confirmable. 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 black spleenwort, treat it as a suspected ingestion and act on the steps below.
What to do if your pet ate black spleenwort
- Remove any plant material from your pet's mouth and move black spleenwort 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 black spleenwort 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 black spleenwort
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:
- Peperomia — non-toxic to cats and dogs (care guide)
- Cast iron plant — non-toxic to cats and dogs (care guide)
- Spider plant — non-toxic to cats and dogs (care guide)
- Ponytail palm — non-toxic to cats and dogs (care guide)
Black Spleenwort and pets — frequently asked questions
Is black spleenwort toxic to cats?
Black Spleenwort (Asplenium adiantum-nigrum) is mildly toxic to cats according to the ASPCA. Asplenium adiantum-nigrum is not individually listed in the ASPCA Toxic and Non-Toxic Plant database. PFAF notes that a number of ferns as a class may contain carcinogens and thiaminase (a vitamin B-depleting enzyme); until this species is individually evaluated, a mildly-toxic precautionary classification is appropriate. The closely related Asplenium bulbiferum is non-toxic per ASPCA, but cross-species extrapolation is not confirmable. 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 black spleenwort toxic to dogs?
Per the ASPCA, Black Spleenwort (Asplenium adiantum-nigrum) is mildly toxic to dogs. Dogs often chew more enthusiastically than cats, so a toxic plant like black spleenwort is best removed from the floor and low shelves entirely.
What happens if my pet eats black spleenwort?
Asplenium adiantum-nigrum is not individually listed in the ASPCA Toxic and Non-Toxic Plant database. PFAF notes that a number of ferns as a class may contain carcinogens and thiaminase (a vitamin B-depleting enzyme); until this species is individually evaluated, a mildly-toxic precautionary classification is appropriate. The closely related Asplenium bulbiferum is non-toxic per ASPCA, but cross-species extrapolation is not confirmable. 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 black spleenwort, treat it as a suspected ingestion and act on the steps below.
What should I do if my cat or dog ate black spleenwort?
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 black spleenwort to the appointment helps the vet treat it correctly.
What are pet-safe alternatives to black spleenwort?
If you want a similar look without the risk, good non-toxic swaps include peperomia, cast iron plant, spider plant, ponytail palm. 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 black spleenwort care
Pet-safety is one piece of the picture. For light, watering, soil, and troubleshooting, see the complete black spleenwort care guide, or browse the full pet-safe plant library to check another plant before you buy it.