pest control - Knowledgebase Question

Naperville, Il
Question by kfricano
March 24, 2010
Don't know if grubs are the problem. Large brown patches all over. Will it hurt lawn if I apply grub control and grubs aren't problem? Am ckg. for predator feasting in lawn for grubs in a.m. Help!! Ugly lawn!!

Answer from NGA
March 24, 2010


Sampling for grubs is a good first step in determining the cause of your lawn problem. Random holes throughout the lawn will give you a general idea of how large the grub population might be. You can cut a square foot of turf out, pull it up and look on the soil surface and on the roots for fat, white grubs; less than six grubs per square foot can usually be masked by water and fertilizers. Populations between 10 and 15 per square foot can cause significant turf damage in September and October. Of course, populations occasionally reach 40 to 60 grubs per square foot and these levels can cause significant damage. If you find grubs you can treat your lawn with a product like Grubex or Bayer Advanced Season-Long Grub Control granules, applied according to label directions.

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