USDA Identified Grapes as High-Risk Lanternfly Targets
Researchers confirmed spotted lanternfly feeding significantly reduces grape berry and cluster weights.
Updated on Sept. 25, 2026 in Botany
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USDA researchers have identified grapevines as high-risk crops for spotted lanternfly damage due to the insect's preference for grape sap. Studies conducted in Virginia and West Virginia indicate that this invasive pest severely impacts grapevine yield.
Why it matters
Understanding the host preference of the spotted lanternfly is critical for protecting the wine industry from the insect, which was first introduced to the U.S. in 2014. These findings highlight the specific vulnerability of vineyards compared to apple or peach orchards.
USDA researchers utilized drones, environmental DNA analysis, and visual population counts of nymphs and adults to measure pest impact. Feeding on sap supports the survival and development of the invasive lanternfly.
The players
USDA
The United States Department of Agriculture is the federal executive department responsible for developing and executing laws related to farming, forestry, and food.
The details
Researchers determined that feeding by the spotted lanternfly directly reduces both berry and cluster weight on grapevines. In addition to studying the impacts on vineyards, the team is evaluating biological control agents against the lanternfly and its preferred host, the tree of heaven.
Timeline
2014: Spotted lanternfly first discovered in Pennsylvania.
September 2026: USDA research findings on grape vulnerability published.
The Big Picture
This research aligns with the USDA biological control agent research program, which seeks to mitigate invasive species through ecological management rather than chemical intervention. It marks a shift toward sustainable pest suppression by leveraging native fungi to target the lanternfly's host.
Vineyard operators may face increased maintenance costs and potential yield losses as the spotted lanternfly spreads throughout the Eastern US. Long-term regional grape production, including in the Lake Erie grape belt, remains under observation for potential economic impacts.
The takeaway
The spotted lanternfly poses a specific threat to the grape industry that differs significantly from its impact on stone fruit trees. Growers should focus monitoring efforts on vineyard perimeters where the invasive pest is most likely to congregate.
Further reading
For more information on plant health and invasive pest management, visit Botany.
Source note: This article includes information reported by FreshFruitPortal.
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