Yellow Star Thistle — (c) Kostas Zontanos, some rights reserved (CC BY), uploaded by Kostas Zontanos
Photo by (c) Kostas Zontanos, some rights reserved (CC BY), uploaded by Kostas ZontanosiNaturalistCC BY
cat safety reference

Is Yellow Star Thistle safe for cats?

Centaurea solstitialis

Barnaby's Thistle is a hardy, spiny annual plant often found in open fields and meadows. While generally considered non-toxic, its fibrous nature can occasionally cause minor digestive discomfort if consumed in large quantities.

Centaurea solstitialisSt. Barnaby's ThistleYellow Star Thistle
Light
Full sun
Habit
Upright, branching annual
Care
Low

Safety status

Cats

Uncertain

Identity or evidence quality is not strong enough for a firm answer.

Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

What this means for your cat

Cats are not the species at risk from Yellow Star Thistle. ASPCA's Barnaby's Thistle entry lists Centaurea solstitialis as non-toxic to cats — the famous "chewing disease" caused by this plant is a horse-only neurologic syndrome, not a feline one. A spiny inflorescence is more likely to be a mouth-irritation hazard than a poisoning one.

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.

Catsconcern notes

Common signs

Under review — original classification flagged as a likely labeler error pending curator verification.

Escalation note

Under review — original classification flagged as a likely labeler error pending curator verification.

Safer alternatives

No hand-picked alternatives for this plant yet. You can still pick your own using the Compare button on any other plant.

Source evidence

NC State Extension Plant Toolbox

botanical · 94% reliability

Open source

Centaurea solstitialis is an annual plant in the Asteraceae family, commonly known as yellow star thistle.

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