Here in Zone 6, the usual first frost date is October 15, with at least one hard freeze usually occurring by November 10. Today is December 1, and as far as I can tell, we have yet to have either a serious frost or a hard freeze at the Battery Rooftop Garden. Last night I harvested tomatoes, lettuce, celery and carrots, all looking as if it were late August. This morning I harvested broccoli and parsley for breakfast.
The purple cauliflower was a thing of beauty: