Q.Sooty Mold on Gardenia
I have sooty mold on my gardenia. I have read what it is and that is easy to fix, but I am looking for a home remedy to fix it. I have heard about a formula with dish soap, like Joy or Dawn, mixed with water that will get it off and kill it. But I am not sure of the ratio or the amount I would need to mix up.

Certified GKH Gardening Expert
Typically sooty mold clears up when you kill the pests causing it. This article will help kill the pests, which will get rid of the sooty mold:
https://www.gardeningknowhow.com/special/organic/natural-home-pesticides-organic-garden-pest-control.htm