I am new to permaculture, currently taking a design course. I live in CO at 8800 feet and am looking for some suggestions on what to do with the north side of my house. It's always very cold in that room. We lost 2 pines due to wind over the last few years which used to help with wind and some insulation. Does anyone have a suggestion of what to do around that part of the house? Trees take a while to grow, not to mention create a fire ladder to the house. Any ideas?