The rose geranium with its highly scented leaves is used in protection sachets, or the fresh leaves are rubbed onto doorknobs and windows to protect them.
All of the scented geraniums have various magical properties, most of which can be deduced from the scent (nutmeg, lemon, peppermint, etc.). Nutmeg scented geraniums posses much the same powers as nutmeg, and so on.