Plants are usually infected with the disease-causing bacteria long before they show any symptoms. The disease organism overwinters in the beetles from one year to the next. The beetles hibernate among the plant debris and weeds around the garden. Belly rot is a soilborne fungus disease that attacks the developing fruit. Use mulches to prevent fruit contact with the soil.
Powdery mildew is a fungus that attacks the foliage during cool, damp periods.
The leaf surface takes on a dusty grey color. Back To Top Frequently Asked Questions Q . Some of my cucumbers are badly misshapen. Remove them from the vines. Misshapen cucumbers may result from poor pollination or low fertility.