Arnica Montana is a perennial herb native to Europe. It can be grown in USDA plant hardiness zones 5 to 8. The plant can reach heights of 2 feet and will produce yellowy-orange daisy-like flowers in the summer. Because the plant can be a slow grower, the blooms can appear as early as June or as late as August. The plant’s roots and flowers are poisonous if ingested in large quantities. However, the arnica can be dried and used as a homeopathic remedy in the form of a compress or salve to treat bruising and sprains.
Fill a shallow growing container with equal parts peat moss, sand and loam. Loam is nutrient-rich soil, or soil that is full of organic matter. Most seed packets contain about 50 seeds. A growing container that is 18 to 24 inches in length and width will generally suffice.
Sprinkle the seeds over the growing mix.
Gently push the seeds beneath the surface to a depth of ½ inch.
Mist the soil with a water bottle.
Place the growing container indoors in a location where it will receive indirect sunlight. Keep it there until late spring. Continue to mist the soil with a water bottle to keep it moist.
Choose an outdoor planting site that has well-draining soil and receives indirect sunlight.
Transplant the seedlings outdoors when all threats of frost have passed in your area. Space the seedlings 24 inches apart. No fertilization is needed, as this plant thrives in nutrient-poor soils.
Water the seedlings weekly, or as needed, to keep the soil moist.