Eucalypus as a Cold Charm
A good all purpose cold herb eucalypus .
Sew up a sachet of this herb in a blue cloth and either wear or carry with you during the cold season.
For those who live in or travel in desert communties, especially cities like Las Vegas and Palm Springs, these charms are absoluttely indispensable.
Walking from air-conditioning cars to the hot desert air into chilly hotel lobbies is an excellant method of contacting a cold.
Another good cure is the regular application of eucalypus oil. Annoint the forehead, throat, and wrists.
Old Witches say that if one eats an onion everyday he or she will never catch a cold, never.
Source; Magical Herbalism