Black spots on mint leaves

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May 29, 2023
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They first had white fuzz on them so I sprayed them with a mix of baking soda + Castile soap + water. Overnight, they showed these black spots.

Did I burn the leaves with the mixture or is it a disease?

If the latter, what disease is this and how should I treat it? From what I'm reading it could be anything and most causes seem to result in tossing the whole plant *cries*
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b
 

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Joined
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Tipton, IN
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It looks like you are growing it in a pot. It could be a nutrient deficiency or it could be root bound. How long have you been growing it in the pot?
 

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