Hollyhocks, also known as Alcea rosea, are a garden favorite for their towering flower spikes that can reach up to three feet ...

What caused this, and how can I prevent it from happening again this year? A: These are telltale symptoms of hollyhock rust, a common disease caused by the fungus Puccinia malvacearum. It can spread ...

Hollyhock rust is a fungal disease of the aerial parts of the plant, caused by Puccinia malvacearum. It is spread by airborne spores. The disease will invariably develop on untreated hollyhocks, ...

Hollyhocks are best grown as biennials in order to reduce their susceptibility to a fungal disease called rust. ‘From my perspective, hollyhocks are now classified as short-lived perennials that are ...

The disease rarely does significant damage to the health of the ... have no alternate host and their entire life cycle occurs on one plant or plant family. Hollyhock rust infects only hollyhocks and ...