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Yellow Patch

Conditions Favoring the Disease

Yellow Patch is most prevalent from late fall to early spring when temperatures are less than 60°F (16°C). It occurs in areas that receive more than 10 hours of leaf wetness for several days in a row and on turf that has excessive thatch and high nitrogen levels. Poor mowing habits like a dull mower blade can increase the probability of Yellow Patch by leaving the turfgrass blades exposed to the disease.


Using a slow release fertilizer to ensure moderate amounts of Nitrogen will help in reducing the chance of Yellow Patch. Reducing the leaf wetness period will also help prevent Yellow Patch. Night time watering can increase the leaf wetness period and lead to disease. Follow Weed Man's proper watering instructions! Allow for better air movement in order to help dry the lawn when moist. Remove excess thatch through regular aeration will also help alleviate compaction and improve drainage. Ensure that when mowing the lawn is mowed at a high level when dry and in the morning allowing for the grass blades time to heal. Early evening mowing will increase chance of Yellow Patch as well as a dull mower blade.

What can Weed Man Do!

You're locally owned and operated Weed Man dealer is here to help. Weed Man's turf specialists can recognize Yellow Patch disease and make recommendations to help your lawn. Weed Man's specially blended slow release fertilizer applied at the right time is the first step in preventing Yellow Patch. Weed Man's fertilizer helps create healthy turf by slowly feeding the lawn as it needs it encouraging deep rooting systems. Your local Weed Man dealer will also be able advise you on any other treatments or cultural practices that may be necessary to help your turf remain healthy and vigorous.