I suppose everyone has a sign when they know summer is over. Clocks gain an hour, kids go back to school, leaves start to turn. No matter what the calendar says, even if it's November (as it usually is) I say my final good-bye to summer when I pull the last tomato plants from the garden. It doesn't make any sense. The season is long past and nights have turned cold but for me as long as there are tomatoes on the vine a bit of the summer lives on.
Looking towards Thanksgiving I'll contemplate this year's green tomato jam while I whisper a fond farewell to another summer.