permaculture is the gardening during winter thing right? and you're trench gardening for winter to take advantage of the warmer earth? I have raised beds so they should heat up the fasted during day time but that trench gardening is a neat trick too if it works.

I planted some cool crops and I made mini greenhouses for later when the frost hits for later this month. I'm just throwing my raised boxes on top of each other and throwing some plastic wrap cover. I'm hoping it works! I plan on just throwing a few blankets on top of my tomatoes

I have a frost question-- is it the temp that kills the plants or the literal frost landing on the leaves and fruits that does it? I know that lower temps certainly slow down the growing process and the colder it gets it stops it altogether- but didn't know if it was the TEMP that killed or the FROST cover that killed.