Mistletoe "American"
Not listed does not mean safe.
James St. John · CC BY 2.0 · Photo source · shows: Phoradendron villosum (a mistletoe in the same genus)
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Phoradendron flavescens
Accepted name per Kew POWO/WCVP: Phoradendron leucarpum (Raf.) Reveal & M.C.Johnst. (the ASPCA lists this plant as Phoradendron flavescens)
Also known as: American Mistletoe
Family: Viscaceae · ASPCA plant record
Verdict at a glance
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Evidence by animal
| Animal | Verdict | Basis | Plant parts | Sources | Evidence link |
|---|---|---|---|---|---|
| Companion mammals | |||||
| Cats | Cats: ⚠ Toxic | Not specified | ASPCA Toxic and Non-Toxic Plants Poison control | evidence | |
| Dogs | Dogs: ⚠ Toxic | Not specified | ASPCA Toxic and Non-Toxic Plants Poison control | evidence | |
| Horses & livestock | |||||
| Horses | Horses: ⚠ Toxic | Not specified | ASPCA Toxic and Non-Toxic Plants Poison control | evidence | |
Source excerpts
ASPCA Toxic and Non-Toxic Plants — Cats, Dogs, Horses
poison-control
Toxic to Dogs, Toxic to Cats, Toxic to Horses
Source checked 2026-10-27
Read original sourceNo evidence collected in this database yet for 20 animals
No evidence collected in this database yet for: Rabbits, Guinea pigs, Hamsters, Rats, Mice, Chinchillas, Ferrets, Pet birds (general), Parrots (macaws, Amazons, African greys…), Budgerigars (budgies), Cockatiels, Lovebirds, Canaries, Finches, Pigeons & doves, Tortoises, Bearded dragons, Iguanas, Goats, Chickens & other poultry
No supported claim has been collected for these animals. Not listed does not mean safe; do not infer suitability from another species.
Toxic principles
ASPCA, as published: Toxalbumin, pharatoxin viscumin (Lectins, Phoratoxins) Source
Clinical signs
ASPCA, as published: Vomiting, diarrhea, low blood pressure (rare), difficulty breathing, low heart rate Source
More from veterinary sources
Last verified (ASPCA record): 2026-10-27. Source access dates and limitations.