Summer Patch

Summer Patch

Lee Miller, University of Missouri, Bugwood.org

Description
Summer Patch is a turfgrass disease caused by the fungus Magnaporthe poae. It causes grasses to form light green patches up to 24 inches wide that later turn a reddish-brown. Some patches may have circles of green grass in the center, sometimes called “frog eyes.” Summer Patch is very dangerous for Kentucky Bluegrass, Annual Bluegrass and Creeping Red Fescue lawns.
Cultural Solutions
  • When available, plant resistant varieties of turfgrass.
  • Maintain healthy turf through proper care.
  • Aerate to increase drainage.
  • Use Triple Action Lawn Fertilizer to fertilize properly. It has slow-acting nitrogen.
  • Do not mow below recommended height.

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