I have an accidental avocado tree growing outside (not in a pot) that has so far survived 4 winters in zone 6 and is now 7 feet high. I don't expect it to fruit, and I am very surprised every year when it leafs out. It is in a protected area right next to my house on the west, and just past it is an old fashioned well structure of the wishing well type but it is a real well with real water in the bottom. This house is of stone, built in 1925 and the walls at the bottom are close to 2 feet thick. The ground to the south falls away steeply, so cold air does not pool in this area. All of that probably has a lot to do with the survival of the tree. It has gotten down to zero F in the last couple of winters but that hasn't happened often or lasted more than one night. I have not done anything to protect this tree such as wrapping it. One of these winters the temperature will go down far enough that the tree won't make it. But, at this point it's an interesting anomaly. This is in the most southwest corner of Pennsylvania.

I got a few of those a couple weeks ago and wasn't super sure how to eat them. I ended up eating the skin which wasn't terrific. Peeling first would have been way better, not sure why that didn't occur to me. Half of them ended up going bad b/c I couldn't be motivated to eat them. Are they extra cold hardy? I've seen them up in the Sacramento area and I know it gets cold snaps up there.

Off the top of my head: Sanguinelli Blood, Tarocco, Moro, Budd Blood, Smith Red, Vaniglia Sanguigno, Valentine(Pumello), Red Vaencia, and Cara Cara (lycopene). I mighthave a couple more that I am not remembering and I have multiples of some and a few Moro and Tarocco from seed. I think they all have gotten fruitlets and several have developed mature fruit but they are all still small trees so not a huge amount of fruit yet. I was hoping for a lot of fruit this year as the trees have been doing well even after the greenhouse overheat in April, but something keeps eating or stealing the fruit when they get about 2 inches in diameter. It is quite frustrating. I never had problems other years so it must be something new to my yard. I have chipmunks for the first time this year, but the fruit seem to large for them to take. I had a second Tarocco, but it died suddenly for no reason I could ever figure out. It's twin is still doing fine and they were next to each other in the greenhouse when the one started dying almost overnight. I had a cocktail grapefruit/pumelo die like that also. I am wondering if that is a rootstock compatibility issue when that happens or maybe the graft fails. The Cocktail made 5 ripe fruit last winter and suddenly died overnight. It had fruited at least twice before that and was a strong grower. It was one of my largest trees. Again, I don't know why it died. It did not seem to be prone to scale, spider mites, aphids or other bugs. The rootstock still looks alive, but it has not sprouted at all. I have been waiting all summer. The Tarocco rootstock sprouted some kind of trifoliate and I now have a fairly large tree to graft onto when I get brave enough and find the time to try grafting. Some trees are real scale magnets,but these were not. Cory

I'd try reposting this in the Fruit and Orchard sub-forum, you may get a better response. I unfortunately cannot help you. I managed to kill my avocado tree about a decade ago and I live near avocado central. You should also list your area and Zone, it will help with the responses.