Hi Olivier! Our family has just recently moved to Bancroft, Ontario. We are in Zone 3 with our two acres of property having more of a Boreal feel than Carolinian Forest...Transitional Forest Permaculture really. We are just south of Algonquin Park. I am in the process of seeing what we have within the wooded area for forest gardening. It's in the initial stages as we have only been here a few months. We originally come from 7 hours south of Bancroft so the difference in soil and plant/animal species is fascinating! Not much I can find specifically on Northern Canadian Permaculture but we'll fix that! Feel free to contact me if you wish