Q.Gardenia bushes outside
I have 3 gardenia bushes planted outside. Some of their leaves are blackish and some are even dead. Is this caused by insects? What should I do?
Downtoearthdigs
Answered on March 17, 2017
Your Gardenia has Sooty mold, which is generally caused by aphids or scale.
Neem Oil is a good organic treatment and is safe for people, pets and Bees!
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/ornamental/flowers/gardenia/common-gardenia-diseases.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
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