Purple coneflower (Echinacea purpurea) is growing very well in my flower garden this year. I had started them from seed, so this was the first season that they all flowered. I love their sturdy stems. When many of my other tall wildflowers are falling over, these stand straight. Tolerant of even poor soil conditions, this pretty perennial is a favorite nectar flower for many species of butterflies* and the seeds are a favorite food source of American Goldfinches. Coneflowers prefer full sun and will bloom right up till the frost.
*We actually are finally starting to see more butterflies now. Varigated fritillaries, Tiger Swallowtails, Pearl Crescents, Cabbage Whites, Common Buckeyes and one Monarch have all visited here, as well as various Skippers and some brown butterflies I couldn't identify before they flew away .