Hi,

Finding this fig is hard, count yourself lucky if you can find an available one.
As for a fig tree that doesn't die in the winter in your cold area, you have to protect it well with insulation!

I live in zone 5 or 6 in Toronto, Canada.
It was the first year that my fig tree spent its winter in the ground last winter. I had it all wrapped up and it slept for a whole 6 months.

Did you ever get your Nero 600M?

Please contact threefoldfarm. They have few nice collection. I just ordered few figs from them.