How to identify the yellow starthistle noxious weed
Today, Feb. 28, on the last day of National Invasive Species Awareness Week, we highlight the yellow starthistle to bring attention to its potential damage to our environment and ask for our community’s assistance in reporting spottings of this noxious weed around Mesa County. The yellow starthistle causes chewing disease that can be fatal to livestock and degrades recreational areas where it is prevalent due to the sharp spines surrounding the flower heads.
Identification features of the yellow starthistle:
- Yellow flower with sharp spines
- Silvery hued stems
- Stems branching off at 45 degrees
- Flowers July - September
- Annual
This plant has been found in limited numbers in the Coon Creek area near Mesa and the western part of Glade Park. We're actively removing yellow starthistle from its known locations across Mesa County, and eradication of this high-priority noxious weed is possible.
If you spot yellow starthistle, please report it to Mesa County Noxious Weed and Pest Management at weed.pest@mesacounty.us or call 970-255-7121. Mesa County Noxious Weed and Pest Management offers private property owners free management assistance with this weed.
