Q.I’ve Got A Hollyhock But It’s Got Small Bites On The Leaves And Stock
It looks like my hollyhock is being eaten alive. I sprayed it with outside pesticides; I feel it’s dying.
Certified GKH Gardening Expert
Since the season is ending, you can cut the stalks close to the ground, about 6 inches. They are biennial so to keep them coming back, let some of the seeds drop to the ground, or you can collect and save them. If the seeds haven't matured yet, don't cut back all the stalks. This should help with the insect problem.
https://www.gardeningknowhow.com/ornamental/flowers/hollyhock/do-hollyhocks-need-deadheading.htm
https://www.gardeningknowhow.com/ornamental/flowers/hollyhock/winterizing-hollyhock-plants.htm