Maybe you've noticed little black spots appearing on your home's siding, your car or other surfaces around your house. That's the unfortunate result of shotgun fungus (also called artillery fungus), which often grows on decaying wood mulch and shoots tarry spores that are almost impossible to remove.
It's the time of year when those spots start making their unwelcome appearance, the Ohio State University Extension reports in the latest issue of its Buckeye Yard and Garden Line e-newsletter.
No fungicides are known to be effective in controlling the fungus, but the extension says you can reduce the problem with these practices:
Plant pathologist Donald Davis at Penn State University has a website devoted to artillery fungus with lots of good information, including methods for removing the spots. In addition, Ohio State has a fact sheet that addresses shotgun fungus and other problematic molds and fungi associated with mulch and compost.