To be sure we're all on the same page, there are differences in organic regulation in the US vs the EU. I don't know much about the US situation, but an outline of EU general regulations for organic plants is https://ec.europa.eu/agriculture/organic/eu-policy/eu-rules-... :

> Basic substances allowed in organic agriculture comply with two criteria: i) they are of vegetable or animal origin ii) they are considered to be "foodstuff"