Herb Pharm® Arnica Liquid Herbal Extract. Whole flower. Herbal supplement. Dry herb/menstruum ratio: 1 : 10. We prepare our arnica extract from the whole flowers of arnica montana plants which are certified organically grown and/or custom Wildcrafted™ in their native, high mountain habitat. To assure optimal extraction of arnica's bioactive compounds, the plants are hand-harvested when in full flower, are carefully shade-dried to retain the full color and aroma, and are then thoroughly extracted. Arnica liquid extract. 800-348-4372. www.herb-pharm.com.