Lancashire,
United Kingdom 
Why is my Euonymus covered in flies Thanks
6 Aug, 2014
Answers
Alternatively, clip the bush over to remove the flowers.
7 Aug, 2014
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If it is in flower then that is what is attracting the flies. Being in flower means it is also attracting bees. So I would hope that you would BEE FRIENDLY and leave things as they are.
6 Aug, 2014