Hanging plants safe for cats

Hanging plants safe for cats exist, but the two most common trailing plants are not among them: every plant below is graded S0 Safe for cats against ASPCA or Pet Poison Helpline records, while pothos and heartleaf philodendron — the vines people actually hang — are both S2 Irritant. That is why this list is short and specific. Not one trailing plant in our index is S0; the safe hangers are all leafy or beaded rather than vining. Six below are safe to have swinging over a cat's head — spider plant, Boston fern, hoya, burro's tail, goldfish plant, and a Christmas cactus in a basket — with no toxic principle on record for any of them. The five that people hang and shouldn't, including the fern that isn't one, are covered further down.

Boston FernA true fern with no toxin on record — hang it high for the fronds' sake, not the cat's. Medium light, high humidity, water every 3–7 days.

Burro's TailDropped beads are a mess, not a hazard — hang it where it can't be batted. Bright indirect light, low humidity, water every two to three weeks.

Christmas CactusOften sold in a hanging basket for its arching stems; the ASPCA lists Schlumbergera as safe. Bright indirect light, water every 7–14 days.

Goldfish PlantThe ASPCA lists Hypocyrta nummularia — goldfish plant, also candy corn plant — as non-toxic on four entries. Plants of the genus Columnea share the name but have no source entry and no grade here. Bright indirect light, high humidity, water every 5–8 days.

HoyaThe milky sap looks suspicious, but the ASPCA lists Hoya carnosa (wax plant, Hindu rope plant) as safe, and Pet Poison Helpline's only note is a possible mild stomach upset. A slow trailer for bright indirect light; water only every 10–14 days.

Spider PlantThe classic basket plant, and the ASPCA lists Chlorophytum comosum with no toxic principle on record — ribbon plant and spider ivy are the same plant. Bright indirect light, water every 7–10 days; the dangling spiderettes are safe too, and they are the part cats go for.

Common, but not safe

The two vines people hang most — pothos and heartleaf philodendron — are both S2 Irritant: insoluble calcium oxalate crystals that burn the mouth on chewing. And the feathery asparagus fern sold on the same shelf as the Boston fern above is S2 Irritant too — not a true fern at all, with berries that cause vomiting and skin contact that causes dermatitis. A dangling stem is the easiest thing in the room to bat and chew.

PothosGolden pothos, devil's ivy — same plant, S2 Irritant for cats: insoluble calcium oxalate crystals cause intense oral burning, drooling, and vomiting on the ASPCA record. Ingestion is rarely more than a bite because it hurts, but a basket puts the vine at eye level.

PhilodendronHeartleaf philodendron is S2 Irritant for cats — the same oxalate mechanism as pothos, with oral pain, swelling, drooling, and vomiting on record, on stems that trail straight into reach.

Asparagus FernNot a fern at all — Asparagus densiflorus. S2 Irritant: the ASPCA lists berries causing vomiting and diarrhea and repeated skin contact causing allergic dermatitis. If your 'fern' has berries, this is it; the Boston fern above never does.

Arrowhead PlantArrowhead plant, also sold as nephthytis — S2 Irritant for cats on the same insoluble calcium oxalates as pothos: oral pain and swelling, drooling, vomiting, and difficulty swallowing, with throat and skin irritation on the Pet Poison Helpline record.

Inch PlantInch plant (Tradescantia fluminensis, also known as speedy henry) is S2 Irritant for cats: the one clinical sign on the ASPCA record is dermatitis, a skin reaction, and the entry names no toxic principle.

6 plants verified so far. This list grows as the index does — every entry is checked against ASPCA / Pet Poison Helpline records before it appears here.