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I have a big bag of potatoes I bought that aren't organic and I didn't eat all of them. They have reached a point where they really aren't worth the trouble to use for food. Can I cut them up and use them to fertilize/mulch my organic garden without contradicting USDA Organic standards? It would seem like such a waste to simply throw them in the trash.

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    Why does your garden need to meet USDA Organic standards? – paparazzo Mar 17 '18 at 9:14
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Specifically to the point of what you can do while complying with the relevant USDA Organic standards (and disregarding what might be a "good idea" or "fine with you or me"):

You cannot apply them directly to your organic garden without contradicting the USDA Organic standards ((c)(3) - "in a manner that does not contribute to contamination of crops, soil, or water by ... residues of prohibited substances").

You cannot compost them and apply the compost to your organic garden without contradicting the USDA Organic standards ((d)(1) - "The producer must not use ... Any ... composted plant ... material that contains a synthetic substance not included on the National List of synthetic substances allowed for use in organic crop production").

You may compost them, apply the compost to a non-organic biomass production system (for example, sod/hay), cultivate that non-organic biomass production system for three years in a manner which allows you to transition to organic biomass production at the end of that period, then apply biomass collected from that system to your organic garden (either directly as mulch or after composting). (This is harder to cite: essentially, but the idea here is that you can use them as a non-approved input and then spend the three years converting to Organic, then use the output - which is Organic - as an approved input.)

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They'll just rot on the ground so not useful for a mulch.

Just put them into your compost bin, or bury them so that they might sprout for the next season though many store bought spuds are treated with sprout inhibitors.

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No!!! I guess you live in the US, right? None organic food is heavily contaminated with pesticides and probably genetically modified. Not a proper addition to compost for organic gardening.

  • The question says without contradicting USDA Organic standards. Do you have any numbers to back up your answer? – Jan Doggen Mar 22 '18 at 10:08
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    @JanDoggen it is well known that non-organic potatoes often contain pesticides, for example potatoes are listed 12th in the EWG list of 'dirty' vegetables). So if the OP wants an organic garden then adding potato mulch with pesticides is indeed a bad idea. It's unlikely that the pesticides are allowed by USDA standards, but the only way to know for sure is if the OP investigates which kind of pesticides are on the potatoes and with what quantities. – THelper Mar 22 '18 at 13:06
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    So it's okay for the OP to eat the potatoes but not to compost them? – Graham Chiu Mar 23 '18 at 3:54
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    The question wasn't whether it is okay to eat them. The question says "without contradicting USDA Organic standards". – Jean-Paul Calderone Apr 19 '18 at 10:30

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