Is Sword Fern Toxic to Cats?

✅ Non-Toxic

✅ 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.

No, sword fern is non-toxic to cats — it is the same species sold as the Boston fern, one of the classic pet-safe houseplants.

Also known as: Boston Fern, Wild Boston Fern, Nephrolepis exaltata · Nephrolepis exaltata

What to do if your cat eats it

No action needed. A cat that eats a lot of fronds may vomit the fiber back up; that is mechanical, not toxic.

Common questions

Is sword fern the same plant as Boston fern?

Yes — Nephrolepis exaltata goes by both names, and neither version is toxic. Wilder-looking cultivars are equally safe.

Are all ferns safe then?

No — true Nephrolepis ferns are safe, but asparagus fern and some other impostors cause vomiting and skin irritation. Check each species by name.

More plants checked for cats

Pothos☠️ ToxicYes, pothos is toxic to cats. Chewing the leaves or vines releases sharp calcium oxalate crystal Aloe Vera⚠️ Mildly ToxicAloe vera is mildly to moderately toxic to cats. The gel is famously soothing for human skin, bu Spider Plant✅ Non-ToxicNo, spider plants are non-toxic to cats. They are one of the best houseplants for homes with cur Easter Lily☠️ ToxicYes — and this is one of the most dangerous plants a cat can meet. Every part of an Easter lily,Sago Palm☠️ ToxicYes — sago palm is severely toxic to cats and among the deadliest houseplants. Every part contai Boston Fern✅ Non-ToxicNo, Boston ferns are non-toxic to cats — a classic choice for plant-loving cat households.

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.