Sorry I don’t know the answer to your question. Have you looked under the leaves and on the ground under the plant to see if you see insects? I hope it will be ok. You must be looking forward to those blooms.

Where are you located?

What kind of soil are these planted in?

Have you had them a long time or just planted?

If they were just planted, what was growing there before?

Any herbicides used recently?

Coneflowers are native here in MO and they grow like weeds. I have never see one with curled up leaves like this.