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false sunflowers with black substance

My false sunflowers get a black, almost wet or greasy, substance that appears to be bugs when closely inspected. What is this? And this occurs on the stems. How do I deal with this problem, as it happens every year? Thanks.


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1 Comment To "false sunflowers with black substance"

#1 Comment By Downtoearthdigs On 06/30/2015 @ 12:14 am

Most likely Sooty Mold. Neem Oil is a good treatment.

Here is a link that will help.

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