I'm spoiled living near Detroit, far is 40 miles. I have maybe 15 independent nurseries within 40 miles. I buy soil conditioner which is composted pine bark. Local independent nurseries make it themselves. A bag of peat moss, perlite from the pot supply stores, huge bag of it. Or buy Optisorb pure DE from O'reilly's Auto parts (Napa floor dry is pure DE too-always check though that it is). And so have a decent soil mix. I do a 3-1-1. I had just enough for this last plant. I'm completely out now. I also sometimes add compost that is in peat moss, a local nursery has such a compost. I add sulfur and chelated iron too. If you can find the pine bark fines, the rest is easy to find. This year I had some larger pine bark. I have a leaf blower that can be used to pick up leaves too, it is a good one with a steal blade to cut leaves. I sucked the larger pine bark into it, and it shredded it to perfect size. It sounded terrible! Yet didn't break or anything.
I use the same mix for other plants, I add lime to the mix and compost too. So a 3-1-1-1 mix of pine-peat-DE-compost for tomatoes, and just about anything else.