Cunningham's Encyclopedia of Magical Herbs - Scott Cunningham 1985

Buckwheat
The Herbs

(Fagopyrum spp.) A

Folk Names: Beechwheat, Brank, French Wheat, Saracen Corn

Gender: Feminine

Planet: Venus

Element: Earth

Powers: Money, Protection

Magical Uses: Grind the seeds (make flour) and sprinkle around your house in a circle to keep evil from it. Or, use to form magic circles on the floor around you while performing magic.

Add a few grains of buckwheat to money incenses, and keep some in the kitchen to guard against poverty.