Magical August-November blooms, Zone 6
"I plant this plant over early-season-bloomers like iris, yarrow and springtime bulbs - this plant grows later in the season and the foliage covers areas that seem a little bare by fall. This plant spreads to form mounds at least 4 feet wide. And they burst into bloom in mid-august and bloom continually until it gets very cold - late November here in zone 6. They are perfectly happy in clay. Rabbits dont eat them. I love how the seed pods look, but unless you love weeding, I recommend cutting the flower heads at the end of the season. The seeds are aggressive. On the plus side, the plant blooms the first year, so if you want more plants, just save the seed heads and shake 'em where you want 'em next year. I have had mixed success with transplanting these. The roots seem to go sidewise, so even if you dig far away from the plant for transplanting, chances are good you are cutting the main root. Better to use the seeds to start new plants where you want them or to share with friends. They bloom beautifully with aster and goldenrod. Check it my photos! Zone six, year two."