There are two small tropical greenhouses near Lviv. They offer tours. The couple that runs them are a whirlwind of excitement and botanical experimentation. They’re a real inspiration. They sell seedlings, and we bought a tiny lemon tree for our home.

They’re growing:

Banana trees
Kiwi trees (vines?)
Lemons
Limes
Coffee trees
and much more

They have some special bred variety of bananna tree growing OUTSIDE their greenhouse, which has already survived -25 C temperatures.