I'm having a problem with the petals on my coneflowers this year. On some of the flowers, all of the petals have disappeared (see attached picture). There doesn't seem to be any bugs, worms, or mildew on the flowers. The leaves look fine, and the flowers without any petals are at a height higher than what I believe a rabbit could eat. Any ideas/suggestions? Thanks.
Echinacea Petals Disappearing
Certified GKH Gardening Expert
This could just be the natural aging of the flower. As the flower fades you can dead head the plant. This will encourage more flowers and longer blooming time.
The leaves look healthy in the image with not signs of insect damage or disease.
Here is a link with more information.