Joe-Pye Weed leaves have holes all over
Something is attacking my Joe-Pye Weed plants. Small holes started appearing in the leaves over a week ago, and it’s getting worse. I’ve tried snipping the affected leaves off, but there are too many plants to do this to all of them. There is no discoloration around the holes and haven’t seen any bugs. What do you think is going on? How can I stop this? Would you let me know. Thank you.
Hennepin County Minnesota