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Weed Spotter This page is devoted to alerting our members to new sightings of uncommon weeds. Since 2004, CWMA has worked to provide a way for our members to receive up-to-date information about new infestations of high priority and unknown noxious weeds. October 23, 2008 - CWMA will no longer be providing the Weed Spotter form. Please refer all sightings to CDA's EDRR program.
What's New?
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July 2008 |
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Yellow Starthistle (Centaurea solstitialis) |
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A new site was reported to the CDA-EDRR Specialist just outside of Beulah (Southwest of Pueblo) in Pueblo County on private land. The estimated acreage is 40 acres with approximately 20% infested with Yellow starthistle.
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photos by CDA-EDRR |
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African Rue |
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Reported to the CDA-EDRR Specialist by Nan Lederer of the CU Herbarium. This infestation is located northeast of Trinidad in Las Animas County on the County Road 95 right-of-way. Plants extended along the road for approximately 200 yards. |
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photos by Jim Walker |
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Swainsonpea (Sphaerophysa salsula) |
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Mark Sweppenheiser of Jefferson County Weed and Pest discovered Swainsonpea near Morrison.
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photos by Alicia Doran |
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January 2008 |
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Yellow Flag Iris (Iris pseudacorus) |
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Ray Sperger, owner of Ark Ecological Services, LLC has reported Yellow flag iris. It was spotted along the edge of a pond in Loveland. Other sightings include Boulder County.
This non-native plant is listed as a noxious weed in a number of other states. It can quickly form a monoculture along the edge of wetlands.. INFO - http://dnr.metrokc.gov/wlr/lands/weeds/iris.htm |
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top photo: Ray Sperger lower photo: King County WA Noxious Weed Control Program |
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October 2007 Narrow-leaved Dalmatian toadflax (Linaria genistifolia) Garfield County Paul Burgell of Rio Blanco County reported 5 acres of narrow-leaved Dalmatian toadflax found on private property in Loma which is just over the county line in Garfield County.
INFO - www.ext.colostate.edu/PUBS/NATRES/03114.pdf http://tncweeds.ucdavis.edu/esadocs/linadalm.html Image - www.s-weeds.net/familjer/tubiflorae/scrophulariaceae/linariagen.html
SEPTEMBER 2007
Douglas County Denny Bohon, USFS, spotted common tansy growing on private property west of West Creek along CR 68.
INFO - usda plants database |
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Copyright ©
2006-2008,
Colorado Weed Management Association. contact webmaster |
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Common tansy (Tanacetum vulgare)