Dakota Gardener: Snow mold is affecting lawns this spring

A week ago, I came home to an unusual scene in my yard. As the sun was setting, I observed a fluffy substance resembling spider webs stretching across portions of the lawn. Were we invaded by a million spiders? Before you get the heebie jeebies, I can reassure you that I had not entered an arachnid horror movie.

This white, cottony substance occurred in areas of the lawn that had been covered with...