I have one Hollyhock plant in the garden, and it looks stunning! It has lots of flowering side shoots and one main stem which soars into the sky, and the leaves seem pretty free of rust this year too. Picking off infected leaves during its early growth may have helped?
Did you know Hollyhock flowers are edible? They can be picked fresh and used in salads or brewed for tea. Buds can be sauted in butter, and leaves (I would imagine rust-free) can be used in middle-eastern recipes.
Please be aware if you suffer from allergies.