My cannonball tree is the highlight of my rare tree collection as its flowers are marvels and overall the sheer size of the tree is something to behold. The trick to proper tree structure is to support it with stakes until it reaches roughly 10-15 ft and then it will grow straight as a rod. When its taproot reaches the waterline watch out as it will grow as fast as Jack and his beanstalk. Also, the one feature that is underreported is the amazing silvery bark that has a very unique shimmer. Anyway, if you can’t tell, I am a super fan. It’s truly one of a kind. Do not hesitate if you have the room !!!
I find if you grow exotics within the same family near one another for whatever reason they tend to have more of a tendency to thrive (I think they talk to one another). Within the same grove I have two Brazil nut trees, a few pua keni keni, and many heavens lotus. All strongly recommended if you can find them.
Cheers —-AJ