Field Horsetail is found in poorly drained soils, as well as low, sandy or gravel soils with good drainage. It can severely suppress field crops and other plants. It is especially poisonous in young horses. Hay containing this weed may be more poisonous than fresh plants in the field.
Symptoms are slow to develop.
There is no known anti-dote. A veterinarian should be consulted immediately for supportive treatment to reduce the damage caused by ingestion of poisonous plants. This information is provided as a public service, but we cannot guarantee that the information is current or accurate. Readers should verify the information before acting on it.