Milehighgirl, you've asked a good question because nurseries should state what zone they recommend growing certain fig trees; but they don't. I think MD2S can grow fine in your area only if you winterize it very well. I don't have too much faith in what the Nat Arg fellows are saying these days. I do believe we are in a climate shift but that's just my thinking based on how my fig have grown in my orchard over the years.
Nat Arg says I'm in zone 8a, but if you ask me, I'd say I'm really in 7b! It gets very cold in my area, CHarlotte, NC every year about 4 times a year. Sometimes it gets cold and says cold for days. We did not use to get cold weather until Januaruy YEARS ago! Today, the weather here changes and get cold in November. Just 2 days ago the cold front hit my area. My readings showed 22 degrees outside and 28 inside my greenhouse. But 2009 and 2010 was my best years for growing figs. We had short sleeve weather in November and December back then! Not so today!
I have Madeleine des Deux Saisons growing in my orchard and backup in a pot. I winterized all of my orchard trees 2 years ago. But last year was the first year that I did not and I did not this year. Md2S is an excellent tasting fig IMHO. I love it and its one of those rare figs to get. Although we had a very mild winter last year, my tree was not harmed by the 25 degree temps last year in November. December and January was mild and temps never got that low in my area.
If I was in zone 5, I would winterize every one of my trees, period! I talked to a nursery owner in the moutains of NC last year. He said the only fig that they can grow up there is Brown Turkey without winterization and he's in zone 5. I wanted him to try some others but he said no way. He says it stay cold too long and its just not worth the risk.