The native cosmos is one that you can cut and cut and cut and it will still come back. It will take on a more bushy, pleasing appearance.
I cut back the chocolate daisy about 2 weeks ago. It is already flowering again.
I love the blanket flowers for their ability to keep going through all that heat with no loss of color on the flowers. They will look just as good in the fall.
I usually pull out the Gulf coast penstemon after it has flowered because of the need to reduce seed head production. This year I just cut off the heads. It has surprised me with a second flowering.
Other plants a cut back severely a few weeks ago were catmint, Salvia greggii, daisy fleabane and wine cups. Now it's the turn of the wine cups again, lantana, lemon balm, knockout roses, purple cone flowers, tomatoes, zinnias and on and on. Doing this now will ensure a good flowering in the fall.
I made a start today by cutting back the lemon balm and look what I found. My very first chrysalis. In all my years of gardening it is the first I have ever found. Not surprising. There are plenty of places to hide in my garden! Following the advice of someone on the internet I have put it, along with twigs, leaves and some sugar water in a clear plastic container with lid. I shall be watching it daily for its emergence. Hope it is something pretty.