Contact Us - see below303-271-5989
Monday - Thursday7:00 a.m. - 5:30 p.m.
The Jefferson County Weed and Pest Management program helps the public by developing integrated management plans to control mountain pine beetle and noxious weeds. The program, which includes working with the Jefferson County Open Space Natural Resources section, coordinates with other governmental agencies to achieve regional pest control.
This site includes information to help identify, control and prevent mountain pine beetle and noxious weed infestations. Our goal is to educate the public about weed and pest problems and offer solutions.
Common mullein (Verbascum thapsus) is an invasive biennial weed that grows in dry open areas. It reproduces by seed and each plant can produce over 100,000 seeds that can last in the soil for 75-100 years.
You can control it by removing the plants including the top 2-6 inches of the taproot. Or it can be treated with herbicide. It is common to see patches of seed stalks left over from last year and people will sometimes spend their time removing them while overlooking this year’s rosettes (seedlings). I recommend that you spend your time on the plants that are just starting because most of the seed from last year’s stalks have already dropped. An added benefit is that you do not need to bag the rosettes that have not yet formed flowers. Learn More
Douglas fir Tussock Moth populations have increased along the Front Range and are beginning to defoliate Douglas fir and spruce trees in large numbers.
On February 3rd, we co-hosted an outreach event in Buffalo Creek. CSFS Forest Entomologist Dan West has kindly allowed us to share his PowerPoint presentation Douglas Fir Tussock Moth Outreach
See our DFTM page and our Fact Sheet for more information.
New Zealand mudsnail (Potamopyrgus antipodarum) has recently been discovered at Chatfield State Park. This aquatic snail is very invasive and can overtake lakes and streams.
Aquatic Nuisance Task Force
Recently Jeffco Weed & Pest became a partner with the national Play Clean Go campaign which focuses on preventing the spread of invasive species.
Information, Identification and Control, FAQs and Links
Emerald Ash Borer, Mountain Pine Beetle, Other Pests, Vertebrate Pests, FAQs and Links
100 Jefferson County Parkway Golden, Colorado 80419 (303) 279-6511
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