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 ...

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 ...

The leaves of my apple tree have odd spots on them. What is this and what can I do about it? Although there are other possibilities, cedar-apple rust is a possibility, given your description, the wet ...

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 ...

Cedars have a thing for apples. Apples have a thing for cedars. And when it rains, it shows. Cedar-apple rust is something that likely is showing after rains of recent weeks. Skiatook naturalist David ...

Cedar apple rust is a fungus, but its brown cases become jelly-like blobs with protrusions that look like something from outer space.