I had to go to a local hydro shop to get it. You can go here:
http://www.foxfarmfertilizer.com/buy...sumer_map.html
and see if anyone near you sells it. Just be prepared, the 2 cubic foot bag cost me $25. For plants other then my seedlings and a few special cases like the blueberries, I've been mixing it half and half with a plain Fafard container mix to make it go further.