Plant safety record
Nasturtium
Tropaeolum majus
Correctly identified Tropaeolum majus is listed non-toxic to cats and dogs by ASPCA. Do not apply this result to watercress or another plant called nasturtium.
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Cats
NON-TOXIC
ASPCA classifies Nasturtium, Tropaeolum majus, as non-toxic to cats.
Dogs
NON-TOXIC
ASPCA classifies Nasturtium, Tropaeolum majus, as non-toxic to dogs.
Quick answer
ASPCA lists Tropaeolum majus as non-toxic to cats and dogs. The scientific identity distinguishes it from watercress, Nasturtium officinale.
Plant identity and scope
This record is limited to Tropaeolum majus, which Kew accepts. It is deliberately separated from watercress, Nasturtium officinale, an unrelated plant that ASPCA publishes under the confusing label Nasturtium (Watercress).
Governed aliases: Garden Nasturtium, Nose-Twister, Nose-Tweaker.
What the evidence supports
The non-toxic result is limited to Tropaeolum majus. It excludes Nasturtium officinale, the unrelated watercress identity that ASPCA separately classifies as toxic.
Safety classifications come from PawPlants' governed evidence record, not from a retailer or product label.
If exposure may have occurred
Remove loose plant material and prevent more chewing. Contact a veterinarian if symptoms persist, a large amount may have been eaten, another substance was involved, or the scientific identity is uncertain.
Open PawPlants emergency guidance for immediate next steps and contact options.
Evidence and sources
- ASPCA Animal Poison Control — NasturtiumCat: Non-toxic; Dog: Non-toxic; subject: Tropaeolum majus.
- Royal Botanic Gardens, Kew — Plants of the World Online — Tropaeolum majusEvidence subject: Tropaeolum majus.