Is Ludwigia arcuata toxic to cats?

Mildly. The ASPCA lists ludwigia arcuata as mildly toxic to cats — a chewing cat typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. Ludwigia is not individually listed on the ASPCA toxic or non-toxic plant database, so a definitive pet-safety rating cannot be given; treat with caution and verify with a vet. As a submerged aquarium plant it is rarely accessible to pets, but any ingestion could cause mild stomach upset.

Ludwigia is not individually listed on the ASPCA toxic or non-toxic plant database, so a definitive pet-safety rating cannot be given; treat with caution and verify with a vet. As a submerged aquarium plant it is rarely accessible to pets, but any ingestion could cause mild stomach upset. Signs usually appear soon after chewing rather than hours later — watch for drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy after your cat has had access to ludwigia arcuata.

Stay calm. Remove any plant from your cat's mouth and take the plant away. Note how much was eaten and when, and do not induce vomiting unless told to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice; a leaf or photo helps the vet treat it correctly.

The ASPCA classification Growli uses applies to both cats and dogs: Ludwigia arcuata is mildly toxic to dogs as well. See the full ludwigia arcuata pet-safety guide for both species.

For a similar look without the risk, see the best cats-safe plants list — every plant there is ASPCA non-toxic to cats and dogs.