GRAY LEAF SPOT ON LAWNS

March 29, 2013

Now that the snow is mostly gone, we are seeing some common early spring problems in lawns.  Here are a couple of things that I observed in my own lawn yesterday.

The first is Gray Snow Mold, caused by fungal organism (Typhula incarnata).  This is a common problems that develops in lawns at this time of year.
 

 Here is how I know what it is.  The brown fruiting bodies on the tissue are "sclerotia", which are commonly associated with this disease on turf.

 The second problem is a feeding trail of voles that were active under the snow.

Feeding Trails

 Here is the culprit (Picture from Timothy Christians)

There will likely be several turf problems showing up in the next few weeks.   I would appreciate any picture that you have for the blog.

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Nick Christians Professor

Nick Christians, Ph.D. – University professor of turfgrass management, Iowa State University, Department of Horticulture, Ames, IA, and adjunct faculty, Department of Agronomy, Iowa State University, Ames, IA. Dr. Christians received his B.S. from the Colorado State University ...