2022 Adult Spotted Lanternfly Status in PA Vineyards: September 23

The Penn State Grape and Wine Team recently sent out a survey to learn more about the magnitude and severity of adult spotted lanternfly (SLF) populations throughout Pennsylvania vineyards. Fifty-five Pennsylvania growers participated in the survey; thirteen growers reported the absence of adult SLF in their vineyards; forty-two growers reported the presence of adult SLF in their vineyards.

Below is a map representing counties with at least one vineyard that reported the presence of SLF adults. Vineyards reported SLF absence in Adams, Bedford, Centre, Erie, Fulton, Snyder, Union, Washington, and Wyoming counties.

Map source: www.fedstats.gov

At least one vineyard in Berks, Chester, Dauphin, Lancaster, Lehigh, Luzerne, Schuylkill, and York counties reported that SLF existed in 50% or more of their vineyard acreage. At least one vineyard in Lancaster, Lehigh, Schuylkill, and York counties reported that the most severe SLF density was over 50 per vine. SLF densities were also high in vineyards in Berks counties (up to 31–50 per vine), Dauphin (up to 21–30 per vine), Cumberland, Luzerne, and Westmoreland (up to 11–20 per vine) counties.

We thank all stakeholders for their participation in this survey! Please retake the survey weekly so that we can report updates on a continuing basis. We estimate the survey will take approximately three minutes to complete.

You may access the survey here: Weekly Adult SLF Survey.

Please see the Spotted Lanternfly Management in Vineyards fact sheet for information about SLF management in vineyards.

Please contact the authors below for any questions you may have about SLF in your vineyard.