Colorado blue spruce [Picea pungens] is the native, state tree of Colorado and of Utah. And it grows best there. Elsewhere, it's susceptible to fungal disease. But its color isn't caused by fungus....
No. [1] The powder's what gives the blue spruce its color. The powder has a range of colors from white to green to blue. [2] It's removable. So it can be washed, or wiped off. So heavy rain and snow...