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 ...

This is a plant disease topic we usually talk about later in the season, but with the warm weather we have been having, it’s likely that rust season will start a little earlier this year. And when we ...

Q: Last year I learned I had rust on my serviceberry and hawthorn trees. What do I look for this year to prevent that? A: It’s hard to prevent rust infections on vulnerable plants unless you are ...

Shown here is an intimidating and odd-looking fungal growth attached to a cedar branch. It is called cedar apple rust. The airborne spores growing on the leaves and fruit of an apple tree will infect ...

Cedar-apple rust is one of several plant diseases that are all caused by different species of a fungus called gymnosporangium. All of these diseases are referred to as gymnosporangium rust diseases.