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False Sunflower Plants

Q.false sunflowers with black substance

Zone southern Manitoba, Canada Zone 2 | kdlewis added on June 29, 2015 | Answered

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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Answered on June 30, 2015
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