What should I do if my dog ate Black Locust?

Remove any plant material still in your dog's mouth and from their reach, then call the ASPCA Animal Poison Control Center at (888) 426-4435 or your veterinarian. Do not induce vomiting unless a veterinarian or poison control specifically tells you to. Call immediately if you saw your dog eat any part of the tree (seeds, pods, bark, leaves, or sprouts), or if you see vomiting, bloody stool, weakness, or labored breathing. Don't wait for symptoms to progress — call the ASPCA Animal Poison Control Center at (888) 426-4435 or your veterinarian right away.

Black Locust — (c) Gianni Del Bufalo bygdb, some rights reserved (CC BY), uploaded by Gianni Del Bufalo bygdb — Photo by (c) Gianni Del Bufalo bygdb, some rights reserved (CC BY), uploaded by Gianni Del Bufalo bygdbiNaturalistCC BY

Photo by (c) Gianni Del Bufalo bygdb, some rights reserved (CC BY), uploaded by Gianni Del Bufalo bygdbiNaturalistCC BY

dog safety reference

Is Black Locust safe for dogs?

Q: Is Black Locust safe for dogs?

Black Locust is potentially toxic to dogs. The plant contains toxins that can cause severe systemic reactions. Seek immediate veterinary attention if your dog has consumed any part of this tree.

Robinia spp.

Robinia species, commonly known as locust trees, contain toxic proteins and alkaloids throughout the bark, leaves, and seeds. Ingestion can lead to significant gastrointestinal and neurological distress in pets.

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Black LocustFalse AcaciaRobinia pseudoacaciaRobinia spp.

Light: Full sun to partial shade
Habit: Tree
Care: Low

Safety status

Dogs

Potentially toxic

Consulted 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

ASPCA Toxic Plant List

What this means for your dog

Dogs that chew on black locust bark, leaves, seeds, or pods are at real risk: the ASPCA lists every part of the tree as toxic, and serious cases can progress to bloody diarrhea and breathing trouble. Treat any known ingestion as urgent — even a small amount of seed or fresh growth can hit a curious dog hard.

What to watch for

Earliest and most common: vomiting, depression, and refusing food. As poisoning progresses watch for weakness, labored or difficult breathing, and bloody diarrhea. The ASPCA notes severe cases can be fatal, so any of these signs after suspected exposure is an emergency.

Time window

Exact onset isn't well documented for dogs in the cited sources; assume signs can appear within a few hours of ingestion. Treat any known exposure as time-sensitive rather than waiting to see what develops.

When to call the vet

Call immediately if you saw your dog eat any part of the tree (seeds, pods, bark, leaves, or sprouts), or if you see vomiting, bloody stool, weakness, or labored breathing. Don't wait for symptoms to progress — call the ASPCA Animal Poison Control Center at (888) 426-4435 or your veterinarian right away.

First aid at home

Remove any plant material still in your dog's mouth and from their reach, then call the ASPCA Animal Poison Control Center at (888) 426-4435 or your veterinarian. Do not induce vomiting unless a veterinarian or poison control specifically tells you to.

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.

Dogs — concern notes

Common signs

Vomiting, diarrhea, lethargy, depression, and potential neurological signs such as ataxia or weakness.

Escalation note

The plant contains toxins that can cause severe systemic reactions. Seek immediate veterinary attention if your dog has consumed any part of this tree.

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

Open source

Black Locust (Robinia pseudoacacia) is listed as toxic to cats and dogs, causing gastrointestinal and neurological symptoms.

NC State Extension Plant Toolbox

botanical · 94% reliability

Open source

Robinia pseudoacacia is a deciduous tree known for its toxic properties if ingested by animals.

Cats & dogs page cats page My dog ate Black Locust

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