I live in Powell River British Columbia and I had 3 avocado plants sprout from compost I had spread in my garden last year. I figured I would cover them with leaves for the winter and see what would happen. We'll, last winter was the coldest on record and went down to minus 15celcius! But this spring I was amazed to see all 3 plants had survived but it looks as though the stems had died back during the winter and new shoots had grown from the base. I am feeling optimistic that if an avocado tree can survive down to minus 15 it could do well in our normal warmer winters
