What about more cold hardy exotics like jujube? Sure there are more.

If you do a search here for lycheeluva, Ohiojay, meyermike_1micha, these are some of the members here that grow citrus, mangoes, lychees, etc...they live in Michigan, Ohio and NY...

The only problem with growing mango from seed is it can take 7-10 years to produce and if its not grafted it may not taste good and might be full of fiber...its best to buy a grafted tree. Lychee is best if purchased as "airlayer" and could produce the very next season after purchase...

Good luck!!

Auron,

Some also grow Kumquats which can fruit easily indoors as well. And if you are into growing bananas, they can sit in a 10 gallon pot (if you have some indoor space and a tall ceiling) and then transplant them into the ground when it's warm enough for them. However, they'll have to do that for a few years plying between the pot and ground before they can finally bear fruit. If you don't plant them in the ground and leave them in the pot outdoor in the warmer months, they'll also fruit in a few years. I've planted bananas both in the ground and in the pot. In the pot, their fruit are scanty.

If I were to live in colder places like yourself, I would have probably experimented with some of these tropical fruit trees myself. I do hope you will succeed in getting some to fruit for you.