white spruce

Rarely on my scouting trips do I ever locate anything that has really good potential for a well developed tree and never before in a native soil that allows for confident collection. BUT on my last outing I found this guy which in my opinion holds both good potential and had a great root...

I bought a potted Black Hills Spruce (Picea glauca var. densata) from Lowes last weekend. It appears to have been dug recently and just dropped into a pot. The soil is fine sand/silt and washes away easily (and weighs like it is solid rock). Can I re-pot this tree into good bonsai mix now? or...