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Welcome to the WeevilTrak℠ blog, offering you updates about annual bluegrass weevil (ABW) from industry leading researchers. This blog will provide you with timely ABW activity across the north east as well as advice on scouting and controlling them using the Optimum Control Strategy.

Latest Posts

Annual bluegrass weevil season 2021 in Southern New England

All indications are that we will be off to an early start with annual bluegrass weevil activity this spring compared to 2020 season. This season we continue monitoring several sites in Southern New England that have been cooperators for several years now.

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2021 ABW Spring Season: Calm Before the Storm

As of Friday, April 2, things were getting a bit of a late start in North Carolina, especially compared to 2020, when a warm February resulted in early ABW adult activity and some early applications. This spring has been relatively cold with degree day accumulations between 1-3 weeks behind what we have observed in the past.

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March 2021 WeevilTrak Update

I have been looking for annual bluegrass weevil (ABW) adults every day since early March. On a few of the warmest days of the year so far, I have found low densities throughout Maryland, Delaware, Southeastern Pennsylvania and New Jersey. These densities are very low and in my opinion, they do not warrant insecticide applications. I encourage patience.

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Early and alarming ABW activity seen in Virginia – Stage 1

Growing degree days may not have accumulated that much in Virginia, but other indications are suggesting that a first spray application to target ABW adults may be necessary in Virginia.

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WeevilTrak Update March 22, 2021

Nothing signals the start of the annual bluegrass weevil season more than sitting down to write the opening WeevilTrak blog. This year is looking as though it will have an early start as temperatures during the week of March 22 should force some of the first wave of adults out of overwintering.

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Getting ready to track ABW: methods for predicting activity and estimating adult populations

February in New Jersey was certainly snowy and seemed cold, but temperature-wise it was actually spot-on average. Since we have not had a lot of extreme temperatures, neither on the lower nor the higher end, the weevils should certainly be just fine, ready to get going soon.

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ABW tracking has commenced in Virginia – very little activity so far

As the week of March 6 has brought some warm weather to Virginia ABW have started to appear slowly.

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ABW update for late September, 2020 in Virginia – Just a few lingering adult weevils

During this last week of September, we are seeing pretty much only a few lingering adults at our three Virginia WeevilTrak locations that will likely be the overwintering population.

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They are Either Here or They are Not! The last of ABW blogs (I hope) for 2020!

2020 will go down as crazy and wild year in many factors of our lives. 2020 was a pretty temperate year for annual bluegrass weevils (ABW) as a whole. I only saw a handful of heavily damaged areas this year compared to what I typically see in my travels. This was a good thing

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Adult peaks and more larvae building up in Virginia

ABW update for August 25, 2020 in Virginia – Adult peaks and more larvae are building up

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