I got to talk to a few of the exhibitors. Check it out at A Day at The Fair. Fall Veggies Certain vegetables perform best when planted for a Fall harvest. Notably, turnips and Brussels sprouts achieve maximum sweetness and flavor if harvested just after a light frost. Other veggies such as Bok Choy have less pest problems if planted for Fall.
Timing can be a bit tricky.
Then you count back the number of days your variety requires to mature plus a week or two. This should assure that the veggies are at least mature in time for a light frost. Because the top two inches of soil can dry out in less than a day, some special measures are required to assure that the seeds stays moist enough for germination. I use a thick layer of mulch on both sides of each furrow. I plant the seeds a little deeper than usual.