To each their own and I choose science. I believe in soil testing and proper application calculated by weight per square footage of the recommended amounts of reliably sourced and pure agricultural amendments such as lime, sulphur, phosphorus, etc. all of which are approved for use in certified organic gardens. Experienced gardeners here using rock dust or other unconventional additives can do their own thing but I definitely recommend to new gardeners to have their soil tested professionally before adding anything other than compost which is the only thing that in my opinion you can never have too much of.
KarenO
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