So a year or two ago I got some Canistel seeds from someone. I didn't really take care of them because I didn't expect them to survive. I kind of left them outside under a Redwood and forgot about it. After a cold spell that killed a lot of Dragon Fruit I was kind of amazed the one that had looked the best was untouched. I started taking care of it better and it looks OK. I ended up getting a larger seedling and while it grows slower then Lucuma, Green Sapote, or P. hypoglauca for me it does grow. I saw the tree at the Fullerton Arboretum and while it's grafted on something it fruits at a fairly small size.
So basically, if I'm going to try to really zone push Canistel in a pot what variety should I try? Are any varieties more cold hardy then others?