Update on the hotbox/raised bed 
It was a failure as a hotbox. I should have started a week or two earlier, packed the calf bedding in tighter, got everything wetter, used cardboard on the sides, and had it in zone one/two instead of zone commute. It did OK as a raised bed for greens/seedling onions when temperatures moderated. The heat cycle started in April or May when we got tremendous amounts of rain. The sweet potatoes seem to be taking off now, hopefully there's enough of a moisture battery to keep them growing through the summer, then I'll take the bed apart to harvest the sweets and the compost. #grownostr #gardening #compost #failure