Jeffco Invasive Species Management

05/12/2026

04/29/2026

Slash Site Update 🌲

We’ll be continuing the pilot hours at the Slash Site for the next few months. Thanks to everyone who has shared feedback so far—keep an eye out for another survey coming soon!

🚫 Hot logs will not be accepted July 15 – September 15
(“Hot logs” contain Mountain Pine Beetle larvae.)

This helps reduce the spread of beetles and protect our local forests.

Thank you for helping keep Gilpin County healthy and resilient!

Visit the Transfer Station & Slash page for more information: https://link.orlo.us/Gt3E6

04/29/2026

04/21/2026

03/24/2026

03/24/2026

Join us for a FREE mountain pine beetle workshop presented by educators from Colorado State Forest Service, Clear Creek Watershed & Forest Health Partnership, and Gilpin CSU Extension. Participants will look at mountain pine beetle impacts along the Front Range and in Gilpin County, understand mountain pine beetle life cycle and management options, and learn some pine tree identification tricks. We will discuss how mountain pine beetle relates to wildfire risk, wildlife habitat, and forest health.

When: Tuesday, March 31, 2026, from 5:30 to 7:00 pm
Where: Gilpin County Public Library, Black Hawk, OR virtually*

*Advance registration is required for virtual attendees: https://col.st/5np79. Registrants will receive a Zoom link upon registration. Registration is NOT required for in-person attendees.

03/02/2026

Jeffco MPB Landowner Assistance Program

Applications now available at https://www.jeffco.us/795/Invasive-Species-Management
Deadline is April 23rd

02/26/2026

🌲🔥 What if forest treatments could help trees defend themselves?

Research on the Front Range shows that thinning and low-severity wildfire can boost ponderosa pine growth and strengthen natural defenses against beetles and drought.

Join us for a free online talk exploring how disturbance, when done right, can improve forest resilience at the tree level. This information directly impacts where YOU live. Stay educated, stay safe!

📅 Monday, March 2 | 6–7pm
💻 Zoom | Free to attend: https://zoom.us/j/99974020601?pwd=btO62XK9zJ75AabzeDbg1R1rLVAicy.1

02/26/2026

MPB Monthly Tips – March

Picking a Contractor
If you are wanting to hire someone to spray your trees or to apply the pheromone packets (Verbenone) to protect against mountain pine beetle (MPB) here are some things to keep in mind:

Anyone applying pesticides for hire (including Verbenone) must be licensed by the Colorado Department of Agriculture as a Commercial Applicator and must hold the appropriate categories including 106-Forest Pest Control and/or 207-Ornamental Pest Control. CDA has a business look up tool that you can use to verify a company’s licensing. https://bit.ly/3OuYO9Z

When Choosing a Contractor -
• You should verify that they meet industry standards.
• CSFS recommends that you consider asking about areas such as insurance, licensing, references, referrals, and professional qualifications.

If You Will Have Your Trees Sprayed -
• Consider only treating high value trees.
• Treatment should occur between May and mid-June.
• Typically, only one application a year is needed for mountain pine beetle control.

If You Will be Applying Verbenone Yourself -
• You may want to purchase the product now so you have it ready to apply between May and mid-June.
• Our MPB Resources page includes a short list of vendors we are aware of, though additional suppliers may also be available.
• Please note that Verbenone is most effective when MPB populations are light to moderate. In areas experiencing heavy activity, Verbenone is not recommended. https://www.jeffco.us/5104/MPB---Resources

Did You Know?
• MPB can fly between ¼- ½ mile.
• If they are above the canopy - the wind can spread them even further – up to 50 miles or more.