Wow.
Build a buried greenhouse . . . wherein the ground stays about 55 degrees and the sun raises it most of the rest of the way needed. Just the polycarbonate double or more glazed roofing is above ground or almost even with the ground.
My insulated passive raised glazed bed worked—very leafy tomato plants all winter.
However, the daytime temps could be as high as 120 degrees and night time temps in the 40’s.
Tomatoes set their blooms above 56 degrees and stop pollinating above 90 degrees. Wheee.
Well I live on Post right now so I’d have to go through eight acts of congress to achieve something like what you suggest but. . . I won’t be here forever!!!
Thanks for some good pointers.