All plants › Dogs › Horse Nettle

Is Horse Nettle Toxic to Dogs?

☠️ ToxicSeverity: Moderate
✅ Cross-checked against veterinary poison-control guidance · Oct 2026 audit
⚠️ Educational info only. If your pet just chewed something and looks unwell, skip the reading and call your vet or Pet Poison Helpline (US): (855) 764-7661.
Yes, horse nettle is toxic to dogs. Its solanine-laden berries and foliage cause vomiting, diarrhea and, in quantity, neurologic depression.

Also known as: Carolina Horsenettle, Apple of Sodom, Bull Nettle, Solanum carolinense · Solanum carolinense

What makes it toxic

Solanine and related glycoalkaloids densest in the berries, present in leaves and roots. They irritate the GI lining and disrupt nerve function at higher doses.

Warning signs to watch for

Drooling, vomiting (sometimes bloody), diarrhea, abdominal pain and drowsiness within hours; large berry meals can add muscle weakness, trembling and slow heart rate.

What to do if your dog eats it

Take the plant away, rinse the mouth and call your vet with an estimate of berries eaten. Any trembling, severe lethargy or breathing change is an emergency-trip sign.

Common questions

A dog ate the yellow berries thinking they were tomatoes — how bad?

This is the common scenario and a real risk — livestock have died from berry meals. Count the missing berries, call the vet and watch for neurologic signs.

Why does horse nettle keep coming back in pastures?

It spreads by deep rhizomes, which is why grubbing fails. Herbicide or persistent removal is needed — important wherever dogs or livestock graze.

More plants checked for dogs

This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.