Cunningham's Encyclopedia of Magical Herbs - Scott Cunningham 1985
Horsetail
The Herbs
(Equisetum arvense; E. telmateia, E. spp.): R C; Equisetum hyemale: P
Folk Names: Bottle Brush, Dutch Rushes, Paddock Pipes, Pewterwort, Shavegrass
Gender: Feminine
Planet: Saturn
Element: Earth
Powers: Snake Charming, Fertility
Magical Uses: Whistles made of the stems of the horsetail, when played, will call snakes to the musician. Horsetail is also used in fertility mixtures, or placed in the bedroom for this purpose.