Q.My Hibiscus Has Black Spot and Leaves Yellowing
Please tell me how to treat black spot and some yellowing leaves on my hibiscus. The one nearby is thriving – just five feet away!

Nikki
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on July 20, 2012
Black spot fungus can be treated with a fungicide. As a safety precaution, I would treat the other plant too, just in case the fungus spreads. If the yellow leaves continue, this article will have other suggestions:
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/answers-to-what-causes-hibiscus-leaves-turning-yellow.htm
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