Abies concolor (common name Colorado fir or white fir) is native to western USA and northern Mexico, but is hardy to Zone 4. I have a couple of no name firs that I acquired from the damaged corner of a nearby nursery many years ago. I am guessing that they are Abies concolor. One of them is on a steady decline over the last few years probably from a fungus disease. I don’t have the heart to cut it, but I know it will be dead in another year or two.
Abies concolor ‘Blue Cloak’
The attributes that make this cultivar highly ornamental are the pale silvery blue needles and somewhat pendulous branches.
This cultivar was reported from the trade by University of Michigan.