coneflower disease

Asked July 27, 2018, 3:55 PM EDT

Hi, I am wondering if I have aster yellow on my coneflowers or something else. Do I need to remove my plants or just cut back. Can I replant in the same area? The leaves look green and healthy, there are no petals or few petals.

Hennepin County Minnesota

2 Responses

It could be aster yellows. There doesn't appear to be yellowing of foliage or green flowers that I can see. Those are common symptoms. You could send a sample to the Plant Disease Clinic if you like. There is a fee. You can remove them and replant also.https://pdc.umn.edu/

Someone else has mentioned that eriophyid mites have been a problem this year. Maybe you should wait to pull them and watch for any other signs before you do.