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ABW damage showing up in the Mid-AtlanticMay 19, 2025

I started to see large ABW damage from larvae and even some pupae in Virginia and Maryland last week.

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Timing for applications targeting mid-size ABW larvae is tricky this year but should be done soonMay 19, 2025

Based on the indicator plants and the larval stage average, it is now time to apply larvicides against the mid-size larvae that have started to exit the plants.

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ABW larvae are hatching in New EnglandMay 15, 2025

It is too late for adulticides in New England. Instead, the focus should be on management of larvae feeding inside of the stem.

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Timing is critical as larval activity ramps upMay 14, 2025

Our scouting indicates that this week marks a critical window for ABW management across the central Pennsylvania and central Ohio regions.

ABW adults emerge in Chicago: What spring blooms are telling usMay 5, 2025

A substantial increase in adult ABW activity has been observed in early May alongside phenological markers of early spring development.

ABW immatures detected in VirginiaApril 29, 2025

With the first spotting of early instar immature ABW, now is the time to revisit the plan of attack for ABW management.

Dramatic differences in ABW progression among Ohio locationsApril 29, 2025

An asynchrony between ABW population development and plant phenology/GDD has been noticed this spring, making optimal adulticide application timings challenging.

Adult ABW peak in the northeastApril 28, 2025

This week and next week are the times to apply adulticides and/or prepare for larval monitoring.

Phenology + GDD = Misleading mixed signalsApril 25, 2025

GDD readings tell us we’re at or near peak adult activity in our region, but phenological indicators don’t fully support the observation. Scouting is...

With GDD’s on the rise, it’s time for ABW’s demiseApril 25, 2025

Larvae sampling suggests we are a little behind expectations based on GDD's and plant phenology, but with upcoming warmer temperatures, I expect the larvae...

Time to seriously check for ABW adults with peak ABW densities impending in central and northern NJApril 21, 2025

Predicting peak ABW adult densities this year is a real headache, but I expect peak weevil densities to start sometime this week in central and northern New Jersey.

Dogwood and redbud trees are in bloom in Blacksburg, Virginia but ABW adult activity has been lowApril 21, 2025

We are a little behind on our GDD in VA compared to recent years, and the weather has made it difficult to figure out ABW activity.

Balancing forsythia bloom & GDD: ABW timing in a tricky springApril 17, 2025

The correlation between seeing an increase in ABW adults and the forsythia 50% green (leaves) and 50% gold (flowers) has long been the target, but this...

ABW updates from New EnglandApril 15, 2025

With expected warmer temperatures in the coming weeks, we expect adult ABW activity in New England to peak near the end of April.

Slow start to full swing: ABW management in NC for 2025April 10, 2025

Slow initial start to the ABW season in North Carolina, but things are humming along now!

Degree days are accumulating and spring blooms are popping but only a slight increase in ABW adult activity so farApril 8, 2025

Our ABW adult sampling showed a slight increase in adult ABW activity. Could this be the peak?

A most unusual springApril 7, 2025

There’s been a dramatic decoupling between accumulated GDDs, plant phenology, and adult ABW migration. The divergence we’re seeing this year highlights...

Slow start to spring: Monitoring ABW activity amid cool conditions in ChicagoApril 4, 2025

Two courses in the northern Chicago suburbs were the first to report ABW presence in Chicago in 2023, setting the stage for ongoing tracking this year.

Recommendations are based on observations from field researchers and may differ based on geography. Always apply product based on your local conditions.

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