Coneflower, also known as echinacea, is a classic bloom ... "To collect coneflower seeds by hand, wait until the flower heads turn brown and the petals fall off," she says. "Then, grasp the ...

but leave the seed heads in situ in fall for the birds to enjoy, as well as providing sculptural definition to your borders in winter. You can cut back echinacea fully in spring when the new ...