Equisetum Species, Horsetail, Scouring Rush
Both a perennial and an annual that grows to 6 feet, with two types of stems. Sterile stems are light green with many branches and no leaves. Fertile stems are singular, darker green, ridged, hollow, with distinct joints. Young shoots appear with a tan spore cone on the end.
Only during drought conditions, unpalatable, can be incorporated into hay.
All parts of the plant are toxic, fresh or dried.
Jaundice, weight loss, general weakness, lack of coordination, anxiety and paralysis, convulsions and death.
Contains Thiaminase that breaks down thiamine, which affects central nervous system and metabolism. Especially dangerous to young horses, can be fatal.
*It should be noted that we are not veterinarians. This information is written specifically for horses and should be used for reference purposes only. If you think your horse has eaten something toxic call your vet right away.