We use it for: bruises, sprains, dislocations, injuries, rheumatism, blows, contusions, skin inflammation, stop shock. External use only. Magickal: Arnica is masculine, associated with Midsummer, the harvest and harvest spirits. It is aligned with the sun and the element of fire. To drive away thunderstorms, burn arnica and say "Set arnica alight, set arnica alight, thunderstorm take flight." Arnica can be used in general protective and crop fertility rituals. Plant it around an area to keep a spirit from entering or leaving. It will only work until the plant dies back in the fall.