Present in Utah through nursery trade. Illegal to sell or propagate. Prevent further distribution.
Quick Facts
Report your sighting through EDDMapS to help us track and respond to new infestations.
Report on EDDMapSCogongrass (Japanese Blood Grass)
Imperata cylindrica
Overview
Cogongrass is considered one of the world's worst invasive plants. It forms dense monocultures, increases fire frequency and intensity, and is nearly impossible to eradicate once established. It is illegal to sell or propagate in Utah.
How to Identify
Perennial grass 2-4 feet tall. Distinctive white, silky seed heads. Leaves have an off-center white midrib. Spreads aggressively by rhizomes and wind-blown seeds.
Control Methods
Report any sightings immediately to your county weed superintendent. Herbicide treatment is required. Multiple treatments over several years are necessary.
Herbicide Recommendations
Imazapyr or glyphosate. Multiple treatments are required. Report all sightings immediately.
⚠️ Always read and follow pesticide label directions. Contact your county weed superintendent for site-specific recommendations. Permits may be required near water.
Need help managing this weed?
Skyline CWMA can connect you with technical assistance, cost-share programs, and licensed contractors for treatment on your property.
