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Gardenia Plants

Q.Blackening of Gardenia Bush

Anonymous added on March 30, 2014 | Answered

The bark and leaves of my gardenia bush is black. It comes off when I wipe the leaves after watering it. But the bark is crusted with it. Also broke a piece of bark off and it has bugs in it. What can I do to clean the leaves and bush and make it healthier? It is getting ready to bloom soon so I don’t want to cut the branches back.

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Certified GKH Gardening Expert
Answered on March 30, 2014

This is sooty mold. It happens when the plant gets a pest infestation. I would recommend using neem oil, as this will get rid of the sooty mold fungus and kill the pests. Here are some articles that will help you: https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm, https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm

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