Black locust - toxic for horses?

Which parts of the black locust are toxic to horses?

The black locust contains toxic substances in its bark and leaves, such as toxalbumins and glycosides, which can lead to poisoning if ingested. Therefore, horses must not nibble on living black locusts.

The bark, especially the inner bark, is the main source of the toxins. The seeds of the black locust (in the pods) also contain toxic proteins and lectins (e.g., robin, phasin) that can cause nausea, weakness, and neurological issues if swallowed. Additionally, the leaves and young shoots contain the toxalbumins robin and phasin – especially young shoots are highly toxic. Similar to the leaves, the branches are also loaded with toxic proteins.

Why are paddock fences made of black locust wood still safe for horses?

For paddock fences, the wood is completely debarked and dried. This process removes the toxic components. Professionally peeled and dried black locust posts are free from toxins and therefore safe for use in horse paddocks.

Advantages of black locust wood for paddock fences

The use of black locust wood for paddock fences is therefore unproblematic and has many advantages over other types of wood:

• Extremely durable: Durability class 1–2, lifespan up to 80 years without chemical treatment 

• Weather-resistant: High resistance to moisture, fungi, and insects – ideal for outdoor areas

• Sustainable: European hardwood, no tropical wood imports, no treatment necessary 

• Natural design: Rustic appearance, harmoniously blends into the landscape 

• Safe for horses: No risk of splinters, no toxic residues with proper processing 

Conclusion

A paddock fence made of black locust wood is the perfect combination of safety, durability, and sustainability. When the posts are debarked and dried, there is no risk to horses. Rely on quality and protect your animals – with black locust wood.