Pet safety
Is giant reed grasstoxic to cats & dogs?
Arundo donax
Quick verdict — at a glance
- Toxic to cats?
- Yes — mildly
- Toxic to dogs?
- Yes — mildly
- ASPCA classification
- Mildly toxic to pets · botanical name Arundo donax
Is giant reed grass safe for cats and dogs?
Use caution. giant reed grass is on the mildly-toxic side of the ASPCA list. Most ingestions are short-lived but unpleasant for the pet; the cost-free fix is a placement they can't reach. This classification follows the ASPCA Toxic and Non-Toxic Plant List, the most widely used reference for companion-animal plant safety in the US and the standard most UK vets cite as well. Arundo donax is not individually listed by the ASPCA. The plant contains indole alkaloids (notably tryptamine derivatives including dimethyltryptamine and bufotenine) that have been identified in the rhizome and leaves. These compounds can cause neurological effects in mammals if significant quantities are ingested. As a precaution, this plant should be treated as mildly toxic to pets and kept away from animals that habitually chew vegetation.
| Pet | Toxic? | Per ASPCA |
|---|---|---|
| Cats | Yes (mild) | Mildly toxic to pets |
| Dogs | Yes (mild) | Mildly toxic to pets |
What happens if a pet eats giant reed grass?
Arundo donax is not individually listed by the ASPCA. The plant contains indole alkaloids (notably tryptamine derivatives including dimethyltryptamine and bufotenine) that have been identified in the rhizome and leaves. These compounds can cause neurological effects in mammals if significant quantities are ingested. As a precaution, this plant should be treated as mildly toxic to pets and kept away from animals that habitually chew vegetation. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to giant reed grass, treat it as a suspected ingestion and act on the steps below.
What to do if your pet ate giant reed grass
- Remove any plant material from your pet's mouth and move giant reed grass out of reach.
- Note how much was eaten and when, and watch for drooling, vomiting, or lethargy.
- Do not induce vomiting unless a vet or poison-control specialist instructs you to.
- Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice.
- Bring a leaf or photo of giant reed grass to the appointment so it can be treated correctly.
This page is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide rather than the plant. If you are worried, always contact a vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — do not wait for symptoms to worsen.
Pet-safe alternatives to giant reed grass
Want the same look without the risk? These plants are listed as non-toxic to cats and dogs by the ASPCA and have similar care needs:
- Prayer plant — non-toxic to cats and dogs (care guide)
- Calathea — non-toxic to cats and dogs (care guide)
- Parlor palm — non-toxic to cats and dogs (care guide)
- Areca palm — non-toxic to cats and dogs (care guide)
giant reed grass and pets — frequently asked questions
Is giant reed grass toxic to cats?
giant reed grass (Arundo donax) is mildly toxic to cats according to the ASPCA. Arundo donax is not individually listed by the ASPCA. The plant contains indole alkaloids (notably tryptamine derivatives including dimethyltryptamine and bufotenine) that have been identified in the rhizome and leaves. These compounds can cause neurological effects in mammals if significant quantities are ingested. As a precaution, this plant should be treated as mildly toxic to pets and kept away from animals that habitually chew vegetation. Keep it out of reach and contact your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 if your cat chews it.
Is giant reed grass toxic to dogs?
Per the ASPCA, giant reed grass (Arundo donax) is mildly toxic to dogs. Dogs often chew more enthusiastically than cats, so a toxic plant like giant reed grass is best removed from the floor and low shelves entirely.
What happens if my pet eats giant reed grass?
Arundo donax is not individually listed by the ASPCA. The plant contains indole alkaloids (notably tryptamine derivatives including dimethyltryptamine and bufotenine) that have been identified in the rhizome and leaves. These compounds can cause neurological effects in mammals if significant quantities are ingested. As a precaution, this plant should be treated as mildly toxic to pets and kept away from animals that habitually chew vegetation. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to giant reed grass, treat it as a suspected ingestion and act on the steps below.
What should I do if my cat or dog ate giant reed grass?
Stay calm. Remove any remaining plant material from your pet's mouth and take the plant away so they cannot eat more. Note roughly how much was eaten and when. Do not make your pet vomit unless a vet or poison-control specialist tells you to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice. Bringing a photo or a leaf of giant reed grass to the appointment helps the vet treat it correctly.
What are pet-safe alternatives to giant reed grass?
If you want a similar look without the risk, good non-toxic swaps include prayer plant, calathea, parlor palm, areca palm. All of these are listed as non-toxic to cats and dogs by the ASPCA, so they suit a home where pets have access to your plants.
Full giant reed grass care
Pet-safety is one piece of the picture. For light, watering, soil, and troubleshooting, see the complete giant reed grass care guide, or browse the full pet-safe plant library to check another plant before you buy it.