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If your dog ate swamp loosestrife — do this now

  1. Take the plant away and clear any pieces from their mouth.
  2. Do not induce vomiting unless told to by a professional.
  3. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 now.

Swamp Loosestrife is mildly toxic to dogs (ASPCA).

Pet emergency

My dog ate Swamp Loosestrife — what to do

Step by step

  1. Take swamp loosestrife away and remove any plant material from your dog's mouth so they cannot eat more.
  2. Note roughly how much was eaten and when — this helps the vet judge the risk.
  3. Do NOT induce vomiting unless a vet or poison-control specialist tells you to.
  4. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice.
  5. Watch for drooling, pawing at the mouth, vomiting, loss of appetite, or lethargy, and bring a leaf or photo to the appointment.

This is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide as well as the plant. When in doubt, call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435.

My dog ate swamp loosestrife — FAQ

Is swamp loosestrife poisonous to dogs?

Yes — the ASPCA lists Swamp Loosestrife (Decodon verticillatus) as mildly toxic to dogs. Decodon verticillatus is not listed on the ASPCA toxic-plant database and no documented pet toxicity cases are reported. However, it belongs to Lythraceae and no confirmed safety data exists for cats and dogs, so it is classified as mildly-toxic as a precaution. Keep pets away from plants in and around water features for general safety.

How serious is it if my dog ate swamp loosestrife?

Swamp Loosestrife is mildly toxic, so most dogs get short-lived mouth irritation, drooling, and vomiting rather than a life-threatening reaction. It is still worth a vet call to be safe, especially if your dog ate a lot or symptoms persist.

What symptoms should I watch for?

Signs usually appear soon after chewing: drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy. Decodon verticillatus is not listed on the ASPCA toxic-plant database and no documented pet toxicity cases are reported. However, it belongs to Lythraceae and no confirmed safety data exists for cats and dogs, so it is classified as mildly-toxic as a precaution. Keep pets away from plants in and around water features for general safety. Any worsening or persistent symptoms warrant an immediate vet visit.

Should I make my dog vomit?

No — do not induce vomiting unless a vet or the ASPCA Animal Poison Control Center specifically tells you to. The wrong action can make things worse. Call (888) 426-4435 and follow professional advice.

How do I stop this happening again?

Keep swamp loosestrife well out of reach, or swap it for an ASPCA non-toxic plant — see the best dogs-safe plants list.

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