The arnica plant is similar to a sunflower or a large daisy, and the perennial plant is known for its medicinal benefits. The plant's large yellow flowers are dried and used in oil infusions and topical salves to treat bruises and muscle strains. Arnica is not recommended for internal use.
Arnica grows well in most climates, although it thrives best in mountainous areas. Plant arnica in a full-sun location, preferably in a raised bed filled with a loose soil mix of compost, peat and sand. Arnica plants grow up to 2 feet tall, depending on the variety, and the flowers bloom in summer.