#5: Purple Coneflower (Echinacea purpurea 'Magnus')
says, "Leave the seed heads after they flower instead of cutting back to attract Goldfinches. They love to eat the seeds of coneflowers. Magnus is a proven variety I have had in my garden for many, many years."
added, "Coneflower (Echinacea purpurea 'Magnus') is a very attractive plant to pollinators and an important source of nectar for many butterfly species. Monarchs, Red Admirals, Sulphurs, Fritillaries, Skippers, Swallowtails, and other butterflies enjoy this plant. In addition, Echinacea purpurea has special value to native bees, particularly bumble and leafcutter bees.
Birds enjoy the seedheads."