Attractive perennial with airy, branching stems to 6’ tall. Bright purple flowers attract butterflies. Best in the full sun. Needs little water once established. Self sows. Super easy to grow, cut back periodically to rejuvenate, or pull out old plants and let new seedling take its place. The small purple flowers are numerous at the top of the tall airy stems. A great look in the garden, they create movement in the garden with the slightest breeze. South America. Can be grown as an annual anywhere.