Check out the grow faq, they have a lot of organic fertilizer recipes that look like you can do on the cheap. Worm castings and the like. Also if you have access to a farm or field with live stock there should be a lot of crap in various stages of decomposition. Don't put anything really fresh in your soil. I can't stress enough the grow faq. All the info you need.

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"There's no money for your issues so long as we're squandering $50 Billion a year on the drug war"- Ben Masel