Summer patch showing up on Kentucky bluegrassJuly 14, 2015 Summer patch, caused by the fungi (Magnaporthe poae), is showing up on Kentucky bluegrass turf at the research station in central Iowa in early July, reports Dr. Nick Christians at Iowa State. See his blog post and photos here Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Tumblr (Opens in new window)