The Q&A Archives: Treating the lawn

Question: Hello,

Part of our back yard lawn died. When we tried to thatch the lawn to reseed this weekend, we discovered a very bad grab infestation under the dead grass. What do we do and in what order?
Should we buy the grab-killing stuff, apply and then reseed? Do we have to wait between applying the insecticide and reseeding (for how long)? Or can we do it in one weekend? Should we fertilize before we reseed? ALso, we were thinking of using that thatching machine... Can we still use it with that grab problem? Please, help!

Answer: I would suggest you work with your county extension to devise a grub control program that is best suited to the specific type of grub you have found. Some need to be treated at specific times of year, some do not really need to be controlled, and others can be treated using nematodes as opposed to a chemical control. In any case whatever you use, you need to read and carefully follow the label instructions. Then, if you have specific questions about using a particular product then you would contact the manufacturer.

I would also suggest you work with them to devise a lawn establishment and maintenance plan that is suited to the type of lawngrass you have, the soil in your yard, and your local climate. They will be able to help you with testing your soil to see if it is suitable for lawn or needs to be amended by adding organic matter for example, or adding lime or fertilizer, and when and how much to use. They will also be able to suggest which specific varieties of lawn grass seed to use based on the soil and lighting conditions in your yard and how best to start it.

Good luck with your lawn!

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