MoochNNoodles, Magnus purple coneflower is so easy to take care of. It will also spread, making it an economical choice. The only equal I have in terms of butterfly appeal is tall garden phlox. Unfortunately, whitetail deer also find the garden phlox appealing but do not bother the coneflower. I also leave the coneflower up for winter interest as the seed heads are a food source for goldfinches. I cut down last year's growth when the new growth first shows in spring.