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Sunflower heads are not flowering

I am trying to find out why my sunflower heads are not flowering. Out of a dozen plants that came up, only one has actually flowered. Is there somewhere I can find pictures of what various pests do to sunflowers? I have tried to upload two pictures of the heads. Any hints would be greatly appreciated. Thank you in advance.


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1 Comment To "Sunflower heads are not flowering"

#1 Comment By Downtoearthdigs On 08/23/2016 @ 7:30 pm

This is most likely due to the Sunflower Midge insect.
I would recommend you contact your County Extension Office to inquire on the best treatment in your region.
Here are some links for you with more information.

[1]
content/uploads/SunflowerInsects.pdf
[2]
[3]


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[1] : http://www.uvm.edu/extension/cropsoil/wp-

[2] : https://www.gardeningknowhow.com/plant-problems/pests/insects/blossom-midge-in-plants.htm

[3] : https://www.gardeningknowhow.com/extension-search/

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