Buy Flowers › Arnica chamissonis - 4" Pot Arnica chamissonis - 4" Pot $6.50 Yellow flowering aster family, medicinal & pollinator plant, 1.5' tall, perennial, full sun, acidic soils, native to Western US, zone 2-8 Add To Cart Added! Yellow flowering aster family, medicinal & pollinator plant, 1.5' tall, perennial, full sun, acidic soils, native to Western US, zone 2-8