Cunningham's Encyclopedia of Magical Herbs - Scott Cunningham 1985
High John The Conqueror
The Herbs
(Ipomoea Purga or I. jalapa)
Poison
Gender: Masculine
Planet: Mars
Element: Fire
Powers: Money, Love, Success, Happiness
Magical Uses: Anoint one of the roots with mint oil and tie up in a green sachet. Carry to attract money.
John the Conqueror is also carried to stop depression, bring love and success, protect from all hexes and curses, and to break and destroy spells and hexes.
To make a simple anointing oil suitable for all purposes, take three High John the Conqueror roots, make small cuts into them with a sharp knife, and place these in a bottle of vegetable, olive, or mineral oil. Let the roots soak in the oil for several weeks. Leave the roots in the oil and use as desired: to anoint candles, sachets, and so on.