Cunningham's Encyclopedia of Magical Herbs - Scott Cunningham 1985
Barley
The Herbs
(Hordeum spp. vulgare) Sprouted Seed: P
Folk Name: Malt
Gender: Feminine
Planet: Venus
Element: Earth
Powers: Love, Healing, Protection
Magical Uses: Use the grain or barley water in love spells.
If you have a toothache, it can be cured with barley. Wind a barley straw around a stone, visualizing your pain into the stone. Now throw it into a river or any running water, and see your pain being washed away.
Barley may be scattered on the ground to keep evil and negativity away.