what is wrong with my hollyhocks?
I noticed my hollyhocks had some kind of orangy scale developing on the leaves about mid-summer. Whatever it is seems to have done them in early. What is it? Should I just pull them all up and start fresh next year? Can it be treated or prevented?
Rust disease is a common occurrence on hollyhock.See the attached publication.http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advi...