What is Mildew?

Mildew is often used interchangeably with the word mold. The answer depends on whether you ask a scientist or a nonexpert. Mycologists, who study fungi, use the term "mildew" only for fungi that grow on plants. When mycologists say "Mildew," they mean the white growth that causes diseases in plants.

People who are not scientists use the term "mildew" differently. For them, mildew is the discoloration caused by mold in buildings. The molds that grow around windows or in bathrooms are called "mildew."

Is mildew different than mold? The mycologist would say they are different. Mildew only grows on plants outdoors. The nonexpert, however, sees the effects of mold growing indoors and calls it "mildew."

The two main types of mildew are powdery and downy. Powdery mildew is commonly found on roses and other flowering plants. Powdery mildew is created by an ascomycota type of fungus. Downy mildew is from the oomycota type of fungus and is found in agricultural products such as grapes and potatoes.

Mold and mildew have many similar characteristics, but they are different types of fungi, and are often different in color and texture. Mold and mildew are often mentioned together as they can both grow in many of the same moist and warm locations. Mold is often black, green, red or blue in color while mildew is usually gray or white.

If you have a question about Mildew or need any of the services provided by Timmco of Clarksville, please contact Timm Johnson at 931-320-3747.