WSU Extension

Hortsense

Hydrangea
 
Disease
Failure to bloom 
Fungal leaf spots 
Hail damage 
Herbicide damage 
Leaf scorch 
Marginal leaf necrosis 
Powdery mildew 

WSU Extension Presents
Hortsense
        

Fact sheets outline IPM strategies including cultural, mechanical, biological, and chemical methods.

Pesticides listed in the fact sheets are examples of products that are legal for use in Washington.