The fungal disease downy mildew has shown up in Michigan cucurbits, prompting university experts to call for all growers to begin applying fungicide.

Because of the fast-acting nature of the pathogen, it may be too late to treat once you see symptoms, says Michigan State University plant pathologist Mary Hausbeck.

Melons and cucumbers appear to be the most susceptible, but other cucurbits also are at risk of developing downy mildew, she says.

For more information and a map showing the latest outbreaks, click here.