DIY Build A Solid Wood Greenhouse, Grow Hardy Crops in -30ºC Winters (Part 2) 建造木制花园温室，零下30度也可种菜 (2)

Notes: 1. I chose double-wall 8mm polycarbonate panels as they could last for decades. You can pick thinner/single-wall polycarbonate panels or plastic covers to save costs. 2. I guess the green house would look even better if I used polycarbonate panels for the bottom 2ft as well. Be realistic on the design per your budget. Measure how much materials you’ll need to build a green house before purchasing them. 3. The green house temperature can be 30C higher than the outside temperature on a sunny day. Make sure there is enough air flow in your green house. 4. Try not to grow perennials in the green house if you live in a cold area. They won’t be covered by snow like other outside plants, while you also cannot water them when it’s below 0C.