June 3, 2025
Invasive species threaten the health of our native ecosystems, and purple loosestrife (Lythrum salicaria) is one of the biggest culprits in Vernon County’s wetlands and waterways.
This beautiful but aggressive plant chokes out native vegetation, reducing biodiversity and degrading critical habitat for birds, fish, and insects. But the good news? We’re not fighting it alone.
Vernon County Land & Water Conservation Department proud to be continuing our Purple Loosestrife Biocontrol Program, which uses a natural predator—the Galerucella beetle—to help manage infestations. These small, plant-specific beetles feed on the leaves and stems of Purple Loosestrife, slowing its spread without harming native species.
How it works:
We raise Galerucella beetles in controlled environments using potted loosestrife plants.
Once the beetles reach the right stage, we release them at targeted infestation sites around the county.
Over time, the beetles reproduce and begin to reduce the vigor of the loosestrife population.
Have Purple Loosestrife on your property?
If you’re a landowner dealing with a population of Purple Loosestrife and are interested in controlling it using biological methods, we want to hear from you. Contact Samer Kharbush at the Vernon County Land & Water Conservation Department to learn more about participating in the biocontrol program.
Phone: 608-637-5475
Email: samer.kharbush@vernoncountywi.gov
Together, we can protect Vernon County’s natural areas and wetlands from invasive threats.
Add comment