WHAT ARE SIGNS OF GRUBS IN LAWN? - Knowledgebase Question

JOLIET, Il
Question by PMATHIS0
April 22, 2009
COULD GRUBS THE CAUSE OF MANY BARE SPOTS IN THE LAWN THAT WERE NOT THERE LAST SUMMER? IF SO, WHAT DO I DO?


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Answer from NGA
April 22, 2009

0

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. If you don't find grubs, you can simply rake out the bare spots, sprinkle some compost over the areas and reseed. Grass seed should germinate in 7-14 days. Good luck with your lawn.

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