This year a small tree in a 2 gallon plastic bag made me a lot of finger limes, it looks like climate here is good for this lime, without the winter of course. I have about 25 fingerlimes at about 25-30g each. It seems like they love the hot weather but not the strong sun, so this year I shielded from UV rays and fruits didn't drop anymore.
I know some guy in southern France has a small orchard and sell these. Anyone knows about him?