Cunningham's Encyclopedia of Magical Herbs - Scott Cunningham 1985

Heather
The Herbs

(Calluna spp; Erica spp. vulgaris)

Flower: G

Folk Names: Common Heather, Heath, Ling, Scottish Heather

Gender: Feminine

Planet: Venus

Element: Water

Deity: Isis

Powers: Protection, Rain-Making, Luck

Magical Uses: Heather is carried as a guard against rape and other violent crimes, or just to bring good luck. White heather is the best for this purpose.

Heather when burned with fern outside attracts rain. Heather has also long been used to conjure ghosts.