Howdy
Well I was communicating with Owen Geiger ...
http://earthbagplans.wordpress.com/ ... and he does not suggest using regular earthbags in cold climates.
[quote author=Owen Geiger] Hi Craig. Search our EarthbagBuilding.com site for Kelly Hart’s house. It’s on the Project pages. He used bags of scoria (lava rock).He lives high in the mountains of Colorado where it’s very cold and the home is very comfortable. Lots more ideas on my Instructables page:
http://www.instructables.com/id/How-to-Build-an-Insulated-Earthbag-House/ I suggest starting out with a smaller dome of the same shape. Use it as a tool shed, etc. That will give you a chance to perfect your techniques.
You can add everything the same as earthships, only this is faster and easier. One secret is using lightweight bags of insulation like Kelly.
I am most interested in using "on site" materials, so I am thinking now along the lines of log cabin or similar.
I hope to integrate all the simple and low cost "Green Building" technologies popular in the 70's like Passive Solar, solar water heater, thermal mass, adobe, and other things. Also the similar technologies of today, like insulated cistern for rain catching, rocket stove, and more.
I have a lot of research to do and I need to raise the bucks

But I hope it will be affordable, interesting, and sustainable.
So I guess I will not soon be building an Earthbag home, but something at some point
Have fun!
Craig