Reusing Potting Mix
I have a huge pile of potting mix (Sta-Green) from last season's SWC's. I want to use it again this season but I'm not sure how to recondition it for use. My question is, what should I add to it (if anything) so that I can use it again? I was thinking of adding some composted manure and pine bark fines, but I'm not sure if that's the right thing to do. Any thoughts would be very much appreciated.