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Sep 18, 2015 10:00 AM CST
Name: Karen
Southeast PA (Zone 6b)
Celebrating Gardening: 2015
Some of my dahlias, sunflowers, and mums are affected by stunted and deformed petals & blooms. Does anyone know what caused this? Any insight would be most appreciated.


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Sep 19, 2015 8:24 AM CST
Name: Sue
Ontario, Canada (Zone 4b)
Annuals Native Plants and Wildflowers Keeps Horses Dog Lover Daylilies Region: Canadian
Butterflies Birds Enjoys or suffers cold winters Garden Sages Plant Identifier
A possibility that comes to mind would be tarnished plant bugs, Lygus lineolaris. I've had problems with them on dahlias and mums. A couple of references with pictures:

https://ag.umass.edu/fact-shee...

See Figure 6 on this page:
http://www.omafra.gov.on.ca/en...
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Sep 19, 2015 10:56 AM CST
Name: Karen
Southeast PA (Zone 6b)
Celebrating Gardening: 2015
Thank You! Thank You! You are exactly right! I am so happy to find out what is causing this issue on my flowers.
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