Simplicity Itself

3 2x8x10', cut one in half, nail 'em

dig down 6 or 8 inches

fill with compost/soil/buffalo chips, mix as you go

shove 6" rebar in halfway (39 cents each at HomeDepot)

4 pieces of 8' PVC

not shown, but good for wind support:

pound stake at each end, wrap/attach to PVC with old rag

stretch string across top PVC to PVC, I do three, a foot apart, to keep plastic taut

throw 10' by 25' clear plastic sheet over it

secure along sides with rocks/buffalo parts

roll plastic at ends up or down for temp control

extend growing season substantially, I grow 9 months a year