I wonder just how much cold can a tree take????
Everything says that figs such as Celeste and B. Violetta, planted in the ground, can take temps down to around four degrees F. 

I left a Celeste, a Joe Morle Paradiso, the Pakistani Black and a Hardy Chicago out in the cold when it got down to 22F.  At that point they'd lost all their leaves and I trimmed them back to fit in barrels, stuffed the barrels with hay and covered them.

The Hardy Chicago had frozen back to the ground last year and was small, but the branches looked good when I put them up for the winter.  I filled that barrell part way with soil, then filled it the rest of the way with hay and covered it. 

The Pak Black looked pretty bad; it may be a tender fig, though my son in law says he has visited the area where it is supposed to have originated and that it gets quite cold there.  It was covered like the Hardy Chicago. 

The Celeste, though covered, froze back last year, growing to about 9 feet tall this year.  I cut it back to a bit less than four feet and will be eager to see what the Spring will show. 

The Joe Morle Paradiso (the REP),. had a four inch trunk and many branches, so when I cut it back it was pretty much a thick four foot stub.  That too will be of interest in the Spring.  It and the Celeste were covered with a barrel full of hay, no soil other than that heaped about six inches high around the outside of the barrels to hold them steady.  The barrels were covered in turn with a flat cap that allows for venting moisture.

My question is this:  Assuming that the trees are not growing--that is they have not been fertilized late in the season, they are not watered and the season has come on slowly enough that they lose their leaves and go dormant, what will the effect of severe cold be.  For example I know that 28 F for a few hours will kill back the green tips of young branches.  What happens at 20 F?   What happens at 15 F?

Assuming that you have a tree that has been in a pot for three years, in the ground for two more--a five year old tree.  It may have a five year old trunk six inches across and 4 feet tall,  side branches three years old,  two inches thick and six inches long.  The side branches in turn may have shoots of this year, less than a year old.

What happens if that tree is left exposed to the wind  and rain in ten degree weather?
Ox