"Brigitte" expounded:

I have a very large bag of Miracle Gro potting soil that's been sitting on
my porch all (Nebraska) winter.

Is it still OK to use? I have a few houseplants that need transplanting
into larger pots and wondered if it would be alright to use this potting
soil.


It's fine, although most likely frozen solid. Just let it defrost and
use it.