Is there a ';home remedy'; for getting rid of fungus on coleus plants?

I have grown many coleus plants. Once I grew one 6ft tall, and 3 feet wide. ( grown from one hanging plant 10'') I take them out and put them in a larger pot. If it does not drain well or is watered too much it will develop a fungus; there are ';fungus Killers'; at a garden center to spray on them.Is there a ';home remedy'; for getting rid of fungus on coleus plants?
They need more air.


Get a fungicide from the plant store.


This is unusual.

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