grub control - Knowledgebase Question

seekonk, Ma
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Question by readart
April 26, 2010
When is the best time to put down grub control and how often do you do it?

Answer from NGA
April 26, 2010
Grubs are closest to the surface and more susceptible to control products in mid to late summer. Sampling for grubs is a good first step in determining whether or not you should use a control. 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. Because these are time release products you can apply them in early summer.

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