Is Scirpus lacustris toxic to dogs?

Mildly. The ASPCA lists scirpus lacustris as mildly toxic to dogs — a chewing dog typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. Scirpus lacustris is not individually listed by the ASPCA as toxic or non-toxic; treat with caution and verify with a vet before assuming it is pet-safe. The starchy rhizomes and shoots are eaten by people, but lacking ASPCA confirmation do not assume pet safety; prevent cats and dogs from chewing it.

Scirpus lacustris is not individually listed by the ASPCA as toxic or non-toxic; treat with caution and verify with a vet before assuming it is pet-safe. The starchy rhizomes and shoots are eaten by people, but lacking ASPCA confirmation do not assume pet safety; prevent cats and dogs from chewing it. 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 dog has had access to scirpus lacustris.

Stay calm. Remove any plant from your dog'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: Scirpus lacustris is mildly toxic to cats as well. See the full scirpus lacustris pet-safety guide for both species.

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