Beauveria bassiana for spotted lanternfly
Documented because it is on the label and people ask, not because it works. Penn State Extension does not currently recommend Beauveria for spotted lanternfly because of inconsistent results. In Penn State's large field trial, published in 2023, none of the Beauveria treatments significantly reduced lanternfly numbers, even after three applications, while a single dinotefuran spray cut them by 72–91%. The spores did not last long on the leaves. Virginia Tech work on spraying egg masses before hatch is promising but not yet advice.
Before you order
Spores of an insect-killing fungus, sprayed on to the pest. They stick, germinate and grow through the insect's skin, so coverage is everything. It is slow, working over 7–10 days, and must start while numbers are low. It can also infect some beneficial insects. How it works, how to tell it has established and the supplier list are on the full Beauveria bassiana strain GHA profile.
Other controls for spotted lanternfly
- Praying mantisWild generalist predator · Wild — conserve; buying egg cases is not a lanternfly control
- Wheel bugWild predator · Wild — conserve; not sold