Bay,
Broom,
Cedar,
Chamomile,
Cinnamon,
Hawthorn,
Iris,
Lily,
Parsley,
Rosemary,
Sage,
Valerian, and
Vervain.
Magickal suggestions for purification:
Chamomile tea is a good purifier for your body. Drink it to purify yourself for a ritual or if you feel unclean for any reason.
-OR-
Armed with sage incense, purify a new home (or a room after an unwanted guest has left) by swinging your censer or incense burner around the perimeter, with the windows and doors open. If you have a ritual dagger, use it to drive out all energies that work against your own; if you don't have one, you can use your dominant hand to repel. Place some parsley in a gauze cloth over the openings to your house (or the doorway to the room) to draw out any residual energies, and then bury the parsley outside after about a week.
-OR-
Under a cedar or hawthorn tree (or just using cedar oil if it's available), purify an object if possible by burying it in the earth for a time. Just passing it under the branches and asking for the tree's blessing is okay if burial is not feasible.