Dogs
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources
dog safety reference
Is Mayweed safe for dogs?
Anthemis cotula
Mayweed is a flowering herbaceous plant in the daisy family known for its strong scent and daisy-like blooms. It is considered toxic to pets due to the presence of compounds that can cause irritation upon contact or ingestion.
Anthemis cotulaDog FennelStinking ChamomileStinking Mayweed
- Light
- Full sun
- Habit
- Upright herbaceous annual
- Care
- Low
Safety status
What this means for your dog
Dogs should stay away from mayweed (also called stinking chamomile or poison daisy). The ASPCA classifies it as toxic to dogs because of volatile oils — bisabolol, chamazulene, anthemic acid, and tannic acid — that irritate skin and the GI tract on contact or ingestion.
What to watch for
Most common: contact dermatitis (red, itchy skin where the dog brushed the plant), vomiting, and diarrhea. Less common but worth noting: anorexia, allergic reactions, and — with chronic exposure — bleeding tendencies. Severity is usually mild-to-moderate from a one-time encounter.
Time window
ASPCA does not give a specific onset/duration. Contact dermatitis typically appears within hours of exposure; GI signs from ingestion usually show up the same day. Exact timing not well documented for this plant.
When to call the vet
Call your vet or the ASPCA Animal Poison Control Center (888-426-4435) if your dog has eaten more than a nibble, is vomiting repeatedly, has visible skin irritation that isn't improving, or stops eating. Routine brush-by contact with mild itching can usually be managed at home, but escalate if symptoms worsen.
Sources: ASPCA (no first-aid guidance).
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.
Dogs — concern notes
Common signs
Skin redness, blistering, oral irritation, and digestive distress.
Escalation note
The plant contains volatile oils that can irritate the skin and mucous membranes. Consult a veterinarian if your dog shows signs of discomfort or persistent vomiting.
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
ASPCA Toxic Plant List
toxicology · 99% reliability
Mayweed is listed as toxic to both cats and dogs by the ASPCA.
Same dog verdict
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