That is sad -
I'm not sure how much different the seasons are where you are located from southern MN -
I think there would be time for some of these to mature if you replanted (from seeds) now:
cucumbers
zucchini
green beans
beets
carrots - they are quite frost resistant
radishes
although some of these are less than thrilled about being in really hot weather (radishes)
early varieties of cantaloupe
are there any tomato plants left at any of the greenhouses?