Your "Fir" is a Norfolk Island Pine...a tropical tree that is at home in south Florida. Notwithstanding that any below freezing temperatures will kill it, moving a plant from artificial light abruptly into the sun tends to scorch it....badly.

Thanks. It was on my covered porch for a few days getting some before putting outdoors. Any tips to get it growing in that bare side?

how cold was it for the last week?

you ought to hope it survives.. let alone start worrying about growing on the bare side ...mid IL is not tropical ... nor is it FL ...

if will not survive in the ground.. outdoors.. next winter ...

you can buy small versions at bigboxstore for a few bucks.. in the houseplant department ...

ken

the thing isn"t worth saving

ron

Sorry tree is history. Small inexpensive replacement examples are currently on display at outlets in my area.

Do you have a compost pile?

Started one recently. Not ready yet

The compost pile question was telling you to put this plant onto it, not that the tree needed compost.

Yes.