For those of us making wine "up north", the choices are tough: buy grapes trucked across country, buy juice or use grapes that grow in these climates.
The last choice can yield interesting wines, though they are in a different class than the Merlots, Cabernets, Zinfandels, etc.
However, much research is being done to enable growing grapes more of the latter types, further north. (Aside from the effects of global climate change. :/)
At least that's the one that strikes my fancy; click through to find out more about Marquette and several others.
Very interesting indeed...