Achillea millefolium (Yarrow)
Acorus calamus (Sweet flag)
Barosma betulina (Buchu)
Cinnamomum spp. (Cinnamon)
Foeniculum vulgare (Fennel)
Hyssopus officinalis (Hyssop)
Juniperis communis (Juniper)
Matricaria chamomilla (German chamomile)
Melaleuca alternifolia (Tea tree)
Melissa officinalis (Lemon balm)
Nepeta cataria (Catnip)
Pimpinella anisum (Anise)
Salvia officinalis (Sage)
Sambucus canadensis, nigra (Elder)
Valeriana officinalis (Valerian)
Zanthoxylum clava-herculis (Southern prickly ash)
Zingiber offiniale (Ginger)

References