So if you want to built an inexpensive, environmentally friendly dwelling, you use what's at hand. Straw bale housing lasts 100's of years in the prairie environment and its thick walls provide a high R value. Craik's Flaxhouse Larry is building a demonstration project using Flax bales, which have a high fire resistance and aren't a preferred insect food.
After the wall is up, you cover the bales with stucco to protect the bales from moisture and increase the asthetic appeal. Here is an example of the first layer.
Then add a couple more layers, smooth the final coat and paint it. Here is an example of the entrance to the Flax Store in Craik, Saskatchewan.
So next time you are driving between Regina and Saskatoon, check out the Flax houses.