Date: December 7, 2001
Category: Diseases Subject: Powdery Mildew
A number of people have been asking about "white lawns." This
is caused by the disease powdery mildew. The fungus that causes the disease
remains on the leaf surface and looks like lime or flour. It causes little
to no damage and requires no treatment. It is extensive this year because
of the humid weather with little rain which favors powdery mildew and
slows growth of the grass plants. It should disappear when the grass starts
growing again in the spring. The powdery mildew on turf will not spread
to other plants. Different powdery mildew species infect other ornamental
plants.
