What can folks do about it?
Control where it goes
As much as any species out there, false-brome is spread by people. So, folks with good trail hygiene can dramatically reduce the threat of false-brome. That means cleaning your boots after hiking in infested areas (or maybe just every hike?), checking the dog’s fur, and scrubbing down your tires if you’ve gone off-road.
Control where it grows
- Dig: digging up false-brome is simple but requires removal of all roots. Cutting seedheads in June decreases the possibility of seed spread. Dug-up plants and cut seedheads must be bagged and put in the garbage to prevent spread to new areas.
- Treat: low rates of herbicide applied in fall will kill adult plants, though herbicide is most effective after a June flower cutting and followed by annual monitoring for new seedlings.
- Check: monitor the site at least annually, and especially years two and three after treatment, as any surviving seed takes its big opportunity to sprout!
If you suspect you’ve found false-brome, the City of Portland REQUIRES you to report it. You can report suspected patches to Mitch Bixby with the Environmental Services' Early Detection/Rapid Response Program at 503-823-2989 or firstname.lastname@example.org. Because several grass species are commonly mis-identified as false-brome, we encourage reporting so that positive identification can be made prior to management. The City of Portland offers assistance with managing false-brome if you would like it.