I noticed Jons description of Atreano mentions it hadn't been tested for winter hardiness. Well I planted one last year at my dads in zone 9. The little guy was about three feet high and the trunk was probably 1.5" diameter. The big freeze in the south zapped it. It got down to about 18 or so. For what it's worth dad wasn't impressed with the figs it produced and it was a cull for him anyway. I gave him a papa john to replace it with. I think the atreano is suited for dry climates over humid, my potted plant produced a couple of tastey figs last year but the majority were very bland and not very sweet. I'm sure it will improve with age, so it's not a cull for me yet...

You are right. Atreano is cold sensitive. I had it in the ground for several years and it would always burn down from frost. I needs a long warm season and the figs are excellent if they are allowed to ripen well.

It is difficult for me to talk about the cold hardiness of trees.  My trees in central Texas (about 70 in the ground) usually suffer 100% die back every winter.  This is even the case with varieties which suffer little damage in far colder climates.  This is partially due to the trees still being green when the first (and most winters second and third) freeze hits.  There are other factors as well, to be sure sure, but I think the trees potential for cold hardiness cannot be achieved without enough time for full dormancy.

Having said that, Atreano is midway through the group to show cold damage in my field.

Atreano is my largest in the ground tree. I do not cover it. Every year it gives me the most figs from any of my trees. There is a tiny bit of freeze burn but my tree is so old that it doesn't affect it. If you're going to plant it n the ground, make sure the tree is at least 2yrs old and has a large root system. Much it heavily and it should be fine. My tree is pretty hardy.

Of the two dozen or so figs I'm testing for cold hardiness, I rank it no lower then a zone 7b/7a, for cold hardiness.

That is once it has become mature. Gets at least 8 hours of sunlight during it's growing season. If the soil is not to wet. It has not been overly fertilized. Is protected from cold winter winds. Is protected from late winter and early spring sun. Also, like Dennis suggest, make sure it is not a one gallon plant, when you plant it in the ground.

In other words I don't recommend it for beginners.

I have not been overly impressed with it's taste at my 5b/6a location. I think along with needing dry soil, it also needs a longer, hotter growing season then I have been able to give to it.

Remember, Hanc had it planted on Long island, in a zone 7, and he winterized it. Plus, it was created for growers in Italy, who did not have to worry about all the things we have to be concerned with, in a cold climate.

I have my stock plant, for cutting's, planted in a 5 gallon pot, and only keep it because customers keep asking for it.

Bob @ T. Pine - Connecticut zone 5b/6a

I have 2 Atreano's that were in their 4th season last year,both in 25 gallon pots. ( Will need root pruning this winter.)
In past years they have been good ,but last season they were great , so good in fact that it has messed up my plans for what figs to keep. 
Maybe it was the year , but both Atreano and Conadria were very good last year. Surprisingly good even though I am predisposed to preferring dark figs.
The interiors on both were much darker color than normal and on both I let them get really very ripe before harvesting because I knew from experience that it makes all the difference with Atreano that it be very very ripe to get its full flavor , more so than any other fig I have.
My pots get overwintered where they don't get colder than 25 F and I've never seen any die back from cold damage.

Two years ago I purchased a fifteen year old tree in a fifty gallon pot. It was always brought in for winters. I planted it in the ground two years ago. That first summer I had over a hundred high quality figs. I left it uncovered last winter and it had significant die back. I only had four or five figs last year. This winter I covered and I am hoping that helps.

I'm thankful for all the input. The tree was probably a year from needing to be in the ground, but then again it's about 1 in 5 years the temps get below 25. I thought the two or three good figs I got off of my potted plant were really nice, but the vast majority it put out were disappointing...

I haven't tasted an Atreano yet but hope to this year.  However, I have read in many different threads how it is important (apparently moreso than other varieties) that Atreano fruits be fully ripe.  If they are fully ripe they are supposed to be to die for.