bctkj, is the birch still in the pot? There is really not much you can do till the tree puts on its new growth then you can assess the extent of the damage. Adequate watering is essential, I'd add dilute solution of seaweed extract and fish emusion (choose one with a low Nitrogen % content).
Heres a very good PDF from University of Arizona (Tucson) I think that although its to the Southwest of you the advice is still good for Colorado. (Its all I've got on my PC to tell the truth!
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az1002.pdf