Stiltgrass is an extremely aggressive and destructive invasive grass that was first discovered in Scio Township, Michigan in 2015. Once established, it quickly takes over, pushing out native plants and wildlife. The Stiltgrass Working Group is a collaborative of private citizens, conservation organizations, and municipalities, all working together to control the threat of stiltgrass and prevent it from spreading beyond Washtenaw and Lenawee Counties. To our knowledge, Washtenaw is the only location in Michigan with an established population of stiltgrass.
Every year, the Working Group conducts a targeted outreach campaign to reach as many homeowners as possible. In 2019, we surveyed over 130 properties to map the spread of stiltgrass, and assist with treatment efforts. Input from the community is at the core of our work. We hope to keep everyone engaged and informed about this effort, and make our knowledge and resources as accessible as possible.
Want more information? Send us an email at washtenawstiltgrass@gmail.com !
What Is Stiltgrass?
Stiltgrass is a prolific invader of natural areas, lawns, gardens, and forests. Each plant produces between 100 and 1,000 seeds These seeds will remain viable in the soil as a “seedbank” for up to five years. As a result, even if treated, the leftover seeds will continue to re-sprout each year until there are no seeds left. If left untreated, stiltgrass rapidly takes over anything it touches, turning lawns, gardens, and natural areas.
Although nothing eats stiltgrass— not even goats— the seeds are easily transported by deer, streams and rain, lawn mowers, and other human activities. For these reasons, it is critical that stiltgrass be detected early and treated as soon as possible to prevent it from spreading and establishing a large seedbank.
Treating Stiltgrass
Several treatment options are available. In March, April, and May, apply a pre-emergent herbicide like Preen to kill stiltgrass seeds. Since stiltgrass spreads by establishing a “seedbank” in the soil, this is extremely effective and may prevent you from having to treat multiple years in a row. In late spring and summer, spray the plant with 2-3% glyphosate (Roundup or AquaNeat). Torching with a targeted weed torch is another effective solution. Finally, for small patches, hand-pulling is sufficient. Double-bag the plant and put it in the trash (not the compost).
If the cost, or the labor involved, concerns you, please contact us: we have cost-sharing options available to help make treatment easier!
Help Stop the Spread!
REQUEST A SURVEY
If you live in Scio Township or West Ann Arbor, contact us between June and September to request a free survey of your property. If stiltgrass is found on your property, we will work with you to find suitable treatment options. Contact washtenawstiltgrass@gmail.com for more info!
DONATE
Financial support helps us reach more people, and ensures that we can treat as much stiltgrass as possible.
SPREAD THE WORD
Tell your neighbors and friends about stiltgrass, and encourage them to reach out. Or contact us to arrange a presentation or workshop at your school, work, or organization.
