Hey I've been reading into many different organic soil mixes to make. I'm trying to use LDs recipe but am having trouble finding some ingredients. I can't find canola seed meal or pumice. I know I can substitute these but I'd like to do everything right and there's probably a good chance it's out there anyways. Also he says it costs him around $6 per CF to make so I'm wondering how. I read that he gets his stuff from nursery supply stores for about half the price that grow stores sell them but I can't find any. If anyone has any info or tips about stores like the one he's referring to or similar in south Florida please drop a reply. ... Would a farmers market be a place to find these sort of things?