Disclaimer: This post was originally posted by Full Member, Dogmusher. This was originally posted on April 11, 2013.
Like many others on here, I've been rather unhappy with the mixes on the market lately, so this year I've been making my own. Since we have over 40 EBs and are starting over because of a move, it's a bit pricey, I can assure you. I am using the 'potting soil' from Lowes and mixing it with sphagnum, vermiculite and perlite. In topping up years I'll use coconut coir, but I simply can't afford to use it for the base mix. I put coconut coir in the wicking corners and use my mix for the boxes. I've only done 10 to date, but so far, they are wicking nicely.