Rust is a fungal disease that seems to be more prevalent in West Coast gardens; it is rarely indicated east of the Rocky Mountains. Rust appears as its name implies, as red-orange spots (raised looki READ MORE http://www.rosemagazine.com/articles02/pages/rust.asp
What is rose rust?
Rose rust is a disease caused by the parasitic fungus Phragmidium tuberculatum and some other closely related species. It is specific to roses, and appears in spring and persists READ MORE http://apps.rhs.org.uk/advicesearch/profile.aspx...