Cunningham's Encyclopedia of Magical Herbs - Scott Cunningham 1985

Horseradish
The Herbs

(Cochlearia armoracia, Armoracia

rusticana) K Gm Ch-4 +F: X

Gender: Masculine

Planet: Mars

Element: Fire

Powers: Purification, Exorcism

Magical Uses: Horseradish root (dried and grated or ground) should be sprinkled around the house, in corners, on the steps outside, and on doorsills. This will make all evil powers clear out, and will difuse any spells that may have been sent against you.