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Nectaplums, never heard of that cross, sounds really good though. For growing, it depends, the problem with with tropical climates (I'm in South Florida) the humidity brings a lot of fungus growth to fruit trees, and citrus is "controlled". I tried regular plums and peaches years ago, they did "ok", but the growth was stunted and I eventually removed them due to fungus. I don't have any space in the house I live in now, but someday I will get to a place where I can grow more.

Yes, in South Florida, you're probably better off with tropical fruit trees. Lots of good ones to choose from, though!

You're always better off with trees.

Maybe later you can share the seeds of the fruit .. haha
Yes you are right, here many can be overgrown with various types of fruits. Have you ever tried the king of the fruit? durian ?