Nasturtium — (c) aacocucci, some rights reserved (CC BY), uploaded by aacocucci
Photo by (c) aacocucci, some rights reserved (CC BY), uploaded by aacocucciiNaturalistCC BY
dog safety reference

Is Nasturtium safe for dogs?

Tropaeolum majus

Nasturtium is a popular, fast-growing annual known for its edible, peppery-flavored flowers and rounded leaves. It is widely considered safe for household pets, though large ingestions of fibrous plant material may occasionally cause mild digestive upset.

Garden NasturtiumIndian CressNasturtiumTropaeolum majus
Light
Full sun to partial shade
Habit
Trailing or mounding
Care
Low

Safety status

Dogs

Generally safe

Consulted references do not classify the plant as toxic for that pet type, while still allowing for mild GI upset if large amounts are chewed.

Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

What this means for your dog

Safe for dogs — Nasturtium (Tropaeolum majus) is on the ASPCA's non-toxic list for dogs, with no toxic principle and no clinical signs reported.

Sources: ASPCA.

If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.

Dogsconcern notes

Common signs

Generally none; however, excessive consumption of fibrous plant matter may lead to mild vomiting or diarrhea.

Escalation note

This plant is considered non-toxic. If your dog consumes a large amount and shows persistent signs of discomfort, contact your veterinarian.

Bring it home

Nasturtiumis generally pet-safe in ordinary household exposure. If you’d like one for your space, here’s a starting point.

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Source evidence

ASPCA Toxic Plant List

toxicology · 99% reliability

Open source

Nasturtium is listed as non-toxic to both cats and dogs.

NC State Extension Plant Toolbox

botanical · 94% reliability

Open source

Tropaeolum majus is a trailing annual with edible flowers and leaves, commonly grown in gardens and containers.

Cats & dogs pagecats page

Same dog verdict

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