Posted 2w ago by @Mothcollective

Any idea what’s causing this?
Just noticed it today. The rest of the leaves look fine
Black spot or Anthracnose. It’s fungal. Most likely from a pest that brings in the pathogen. Could be thrips or fungus gnats. 😖 Get something that contains pyrethrum - then back off the watering. You may want to re-pot and sanitize your pots and liners as well as tools. Check the roots for mushy parts. Trim those away. Anthracnose and Black Spot are hitting hard right now. I just re-potted all of our indoor babies because I saw this on one plant. Even if it’s in quarantine, I’m not taking chances. Don’t worry too much. It is controllable once you remove all infected foliage and treat them accordingly.

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