Hollyhock rust

The hollyhocks I bought earlier this year are getting big. No signs of flowers, but I didn't expect them to flower in the first year.

Unfortunately, I noticed today that a number of the leaves have orange spots on them. Okay, a lot of orange spots and a lot of holes. The mosquitos have obviously prevented me from doing my personal garden tours in awhile. Thanks to Google, I discovered that it is a disease called hollyhock rust.

According to finegardening.com, I should remove any infected leaves now before the rust spores continue to spread, and/or use a fungicide. I prefer to steer clear of chemicals in my garden, but it looks like most of the leaves have some orange on them. What to do?

I did read on some garden forums that sprinkling corn meal around the base of the plants should prevent the disease from spreading. So it looks like I'll be removing most of the leaves and getting some corn meal at the store tomorrow. Maybe I can make muffins too, while I'm at it.