to NGA
What are your wintertime highs and lows? I grew Mexicola Grande Improved in Zone 8 in California. The first 5 or 6 years of its life, I hung a 'trouble light' in the tree and wrapped the trunk with old fashioned Christmas Tree lights. The whole idea was to keep the tree from freezing to death before it got to a size that it could handle colder temps. Our lows were just below freezing but it got to 40 or 50 during the day. The ground never froze. It is the most cold hardy avocado I know of. The bonus is that the pits are small and the skin is edible. No peeling.
