Dandelions are not known to be toxic to horses. However, false dandelions (known scientifically as hypochaeris radicata or hypochoeris radicata) are thought to cause stringhalt in horses if too many of these plants are consumed. ... Over the course of a few weeks or months, the horse should recover.

What plant causes Stringhalt in horses?

The acquired form results from plant (often flatweed/false dandelion, Hypochaeris radicata) toxicity, often occurs as an outbreak in horses on pasture in late summer or fall, and is usually temporary. Although it is known as Australian stringhalt, it can occur worldwide and cases have been reported in California.

What does dandelion do to horses?

The leaves of the dandelion plant are generally fed to horses during spring as the herb assists with cleansing the blood by stimulating the bladder, kidneys and liver. The leaves are high in potassium, iron and calcium as well as vitamins A, the B group, C and D and are traditionally used as an overall tonic.