Fungus one week after repotting, why?

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Cinnamon should never be used on roots. I think the same could be said for neem oil. Both work great on the upper parts of the plant when applied for the correct reasons.

Good luck with your recovery and future orchid endeavours. You have lots of good advice here to go forward with. Sometimes less is more with orchids. They often grow rather slowly and slow and easy on what you do with them also works.

If you are going to try something major, seek advise here or elsewhere first and you will get lots of helpful advise