Cyperus Papyrus - help!

Moxie

Seedling
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Puerto Rico
Does anyone know what this black and white stuff could be and how to treat it? Spotted it on a few clusters this morning🥺17C176AF-1382-4ADB-B019-8BA71E049C1E.jpeg
 
Is that grass?

Sorce
 
Sorry, I must have missed the title! 🤦🏽‍♀️

It seems healthy enough to just cut off the infected parts.

I've noted anything susceptible at buds and new fresh growth, is usually tied to root issues.

Sorce
 
This is an aquatic plant. Do you have it in a pond or a pot. If it is in a pond, copper will kill any invertebrates.
It looks like black sooty mold which should never occur in sunlight. Other than that, I can't really say.
 
Thank you! Is it worth trying copper fungicide?
This is an aquatic plant. Do you have it in a pond or a pot. If it is in a pond, copper will kill any invertebrates.
It looks like black sooty mold which should never occur in sunlight. Other than that, I can't really say.
The plant is in a pot, it gets a few hours of morning sun
 
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