Shorter days and colder nights raise the level of tolerance for the high temps in September. At least this year. Evenings are beautiful and golden , frost is (one hopes) another 4 to 6 weeks off, and the only beast is the mildew.
I start to think about winter color now, Iceland Poppies, Pansies, Snaps-- and even kale ..the experiment with kale last year was wonderful-but only briefly . Aphids seem to colonize the stuff, and the damn snails think they are Hostas. I will try again, with preventative measures.