The last few years, ornamental pear tree leaves have been infected with a rust disease that caused numerous orange spots on their leaves. This disease is cedar-hawthorn rust and on ornamental pear it ...

Rust disease is among the more interesting plant diseases because it requires two different plants to complete its lifecycle. There are a variety of rust diseases, including cedar-apple rust, Asian ...

One of the oddities that nature throws our way in late June is the rusty-orange dust that sometimes mysteriously shows up on cars and walkways under trees. The powdery substance is usually from spores ...