Cats
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
cat safety reference
Is Sudan Grass safe for cats?
Sorghum bicolor subsp. drummondii
Sudan Grass is a fast-growing annual grass often used as forage or cover crops, known for its tall, slender stalks and long, flat leaves. While generally considered non-toxic to pets, its fibrous nature can cause minor digestive discomfort if consumed in large quantities.
Sorghum bicolor subsp. drummondiiSorghum vulgare var sudanesisSudan Sorghum
- Light
- Full sun
- Habit
- Upright, clumping grass
- Care
- Low
Safety status
What this means for your cat
Sudan grass is listed by the ASPCA as non-toxic to cats — its cyanogenic glycosides and nitrates pose serious risk to horses and livestock, but cats don't typically graze in volumes that cause poisoning. Cats that chew on a few blades may vomit or pass loose stool from the rough fiber.
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.
Cats — concern notes
Common signs
No specific toxicity symptoms are expected, though chewing or swallowing plant material may still cause mild stomach upset.
Escalation note
This plant is listed by ASPCA as non-toxic for this pet. Monitor for digestive upset after large ingestion and contact a veterinarian if symptoms persist.
Source evidence
ASPCA Toxic Plant List
toxicology · 99% reliability
Sudan Grass is listed as non-toxic to both cats and dogs.
Kew Plants of the World Online
botanical · 95% reliability
Accepted botanical classification for Sorghum bicolor subsp. drummondii.
Questions about Sudan Grass
Is Sudan Grass toxic to cats?
No, Sudan Grass (Sorghum bicolor subsp. drummondii) is non-toxic to cats according to the ASPCA. It is not expected to cause poisoning, though like any plant material, large amounts can lead to mild stomach upset.
What happens if my cat eats Sudan Grass?
No specific toxicity symptoms are expected. The fibrous plant material may cause mild digestive discomfort — such as vomiting or loose stools — if your cat eats a large quantity, but serious harm is not anticipated.
How much Sudan Grass would cause problems for a cat?
There is no documented toxic dose because Sudan Grass is non-toxic to cats. Even so, non-toxic does not mean safe to eat freely — large ingestions of any fibrous plant can irritate a cat's digestive tract and cause temporary GI upset. Monitor your cat and contact your vet if symptoms persist.
Should I call the vet if my cat chewed on Sudan Grass?
A brief nibble is unlikely to require a vet visit, but if your cat consumed a significant amount and is showing persistent vomiting, lethargy, or loss of appetite, contact your veterinarian. The ASPCA Animal Poison Control Center (888-426-4435) is also available if you want additional reassurance.
Same cat verdict
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