They should be pinched back in summer to ensure a full, bushy plant with stems that won't topple over. Situate in full sun and well-drained soil. Divide the clumps every three to four years for best performance. Coneflowers and Joe-Pye Weed Coneflowers, Echinacea purpurea or alba , bring a wealth of pink daisy like flowers to the fall garden. This is another butterfly magnet with dusky rose flower heads.
Coneflowers can take some shade, especially during the hottest part of the day.
Phlox My phlox are blooming their heads off now, and will continue to do so until frost comes to central Massachusetts. Keep deadheading, and the blooms continue from the side shoots. Most of the above are phlox are mildew resistant, and easy care. Choosing your favorite color is the hard part. I m partial to the hardier Buddleia Davidii's like Black Knight, a blue-black cultivar, and Pink Delight, with dense pink trusses.