I'm making large hoop row covers for some of my raised beds to extend my growing season/winter garden. Looking for best supplier for 6 mil UV greenhouse plastic. I don't need really wide plastic, the hoops are 8' wide so maybe 10' plastic at the most.
Also been researching row hoop covers to see what a double layer with 2" air layer between offers in protection. I've found a couple resources suggest that this set up would provide about 8degrees F of warmth for nighttime. Assuming that is without any passive heat collectors. Does anyone else have information on how much protection this type of row cover offers? Working on a fall/winter planting calendar and sort of need to know for timing of planting. etc.
