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?

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1 Comment To "Gardenia bushes outside"

#1 Comment By Downtoearthdigs On 03/16/2017 @ 9:05 pm

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 ^[1]
https://www.gardeningknowhow.com/ornamental/flowers/gardenia/common-gardenia-diseases.htm ^[2]
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm ^[3]

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URL to article: https://questions.gardeningknowhow.com/gardenia-bushes-outside/

URLs in this post:

[1] https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm: https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm

[2] https://www.gardeningknowhow.com/ornamental/flowers/gardenia/common-gardenia-diseases.htm: https://www.gardeningknowhow.com/ornamental/flowers/gardenia/common-gardenia-diseases.htm

[3] https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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