Dogs
Generally safeConsulted 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.
Sources
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
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.
Dogs — concern 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
Nasturtium is listed as non-toxic to both cats and dogs.
NC State Extension Plant Toolbox
botanical · 94% reliability
Tropaeolum majus is a trailing annual with edible flowers and leaves, commonly grown in gardens and containers.
Questions about Nasturtium
Is nasturtium toxic to dogs?
Nasturtium (Tropaeolum majus) is considered non-toxic to dogs. It is generally safe if your dog nibbles on the flowers or leaves.
What happens if a dog eats nasturtium?
Most dogs will experience no symptoms at all. However, eating a large amount of the fibrous plant material may occasionally cause mild vomiting or diarrhea due to the bulk of plant matter, not any toxic compound.
How much nasturtium would make my dog sick?
Small amounts are unlikely to cause any problem. Persistent vomiting or diarrhea after a very large ingestion warrants a call to your veterinarian, though nasturtium is not considered toxic.
Does non-toxic mean nasturtium is safe for my dog to eat freely?
Non-toxic means nasturtium contains no known poisonous compounds for dogs, but that does not make it a suitable snack in large quantities — significant amounts of any fibrous plant material can cause GI upset. If your dog raids the garden bed and shows persistent discomfort, contact your vet.
Same dog verdict
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