Straw Bale Greenhouse in progress. This is just one of several greenhouses I am working on with square hay bales, straw, and actually hemp bales.
This one is south facing and the square bales are blocking the strong winds from the North and West. You will see several recycled windows leaning in the back where I am experimenting with some early plantings. Also, note that we have some temporary cattle panels bent into place that I will cover with greenhouse plastic. My main concern is the strong winds we get on our permaculture property, there are very few trees and wide open fields next to us.