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The Extension office provides assistance and programs for the community without discrimination in five main areas: Agriculture, Horticulture, Family & Consumer Science, Natural Resources and 4-H Youth Programs.

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Professional arborist at work

Get Help On-line

Click here to expand or collapse this section, which contains information for on-line resources, publications, and blogs.
    • CSU Extension has several publications for the Colorado gardener. Fact Sheet are available on: Gardening Basics, Diseases, Flowers, Fruits & Vegetables, Trees and Shrubs, and Yard.  GardenNotes (Master Gardener Publications) are more in-depth information from Colorado Master Gardener training, and publications for sale on topics include: flowers, fruits and vegetables, gardening basics, household plants and insects, and trees & shrubs.
    • Ask an Expert Get expert answers and help from Cooperative Extension/University staff and volunteers from across the United States.
    • Planttalk Colorado provides information on over 500 horticulture topics from Colorado horticulturists and professionals.
    • Plant Select program is a leading non-profit cultivator, distributor and educator of plants designed to thrive in the high plains and inter-mountain region.
    • Co-Horts blog provides advice and observations from your CSU Extension Horticulture Agents and Specialists.

Services Available

Click here to expand or collapse this section, which contains information on the Gardening Help Desk, plant diagnostic services for home owners and the green industry.

Colorado Master Gardener

The Colorado Master Gardener help desk in Boulder County is open for phone calls, emails, or walk-in consultations every MWF, 9 a.m. to noon and 1 p.m. to 4 p.m. from March 1 through October 31. Email them at mggpa@bouldercounty.org, or contact by phone at 303-678-6388.

Plant Diagnostic Services

Diagnostic services available: the CSU Extension Boulder County plant diagnostic services consist of paid staff and volunteers with specialized training in plant problem diagnosis through visual inspection and microscopy.

1. Visual plant diagnostics for identification of diseases, disorders, and insects. $7 Boulder County resident; $11 non-resident

2. Weed/Plant ID $4 each; Boulder county residents first 2 free.

3. Virus testing for Cucumber Mosaic virus, Impatiens Necrotic Spot virus, Tomato Spotted Wilt virus, and Tobacco Mosaic virus. $25

*Culturing and advanced diagnostic services available through the CSU Plant Diagnostic Clinic in Ft. Collins or the Jefferson County Plant Diagnostic Clinic in Golden.

** Please note that no hardwood tree samples less than four feet in length can be taken out of Boulder County due to the Emerald Ash Borer quarantine.

Request a Site Visit

Click here to expand or collapse this section, which contains information on the Commercial Horticulture and HOA Site Visits

Commercial Horticulture & HOA Site Visits

Who: These site visits are for any commercially managed property including HOAs, parks, churches, businesses, etc. (not individual homeowner’s yard) and/or Green Industry clients with plant/landscape issues/questions.

What: The Boulder County Horticulture Agent will walk the property and assess overall landscape health and management. The Agent will identify plants and weeds, look at irrigation issues and answer your specific questions. There is a $75/hr. site visit fee and they typically last 1-2 hours depending on the size of the property. For an additional $25 the Agent will write up a comprehensive report detailing everything discussed during the visit and will include recommendations and resources.

How: Contact the Horticulture Agent at ddavidson@bouldercounty.org or 303-678-6386 to set up an appointment.

When: Site visits are typically conducted during the growing season (April-October), but they will be scheduled outside of that time if necessary.

Boulder County COVID-19 site visit protocol:

The Horticulture Agent and client will maintain a minimum of 6’ physical distance (10’ is preferred) during the site visit. No momentary violations of this distance are allowed at any time.

The Horticulture Agent will either sanitize their hands prior to and after the visit or wear gloves.

Both parties must wear a mask at all time. If the client is unwilling to wear a mask, it will be the Agent’s decision whether to proceed or stop with the site visit.  If at any time, the client decides to discontinue wearing their mask, the Agent may make the determination to end the visit.

The Agent will not provide the client with any printed material on-site and an invoice for services rendered will be sent after the visit. Materials that cannot be sent via e-mail will be mailed through the United State Post Office.

Client’s contact information will not be shared with anyone unless contract tracing is required for COVID-19.

*** On the day of the scheduled visit, if you have or have had any of the following symptoms: fever, cough, body aches, fatigue or chest tightness, or if you have been in contact with someone who has experience these symptoms in the last two weeks, please be courteous and call to reschedule the site visit or allow the Agent to perform the visit alone. The Agent will provide the client the same courtesy if they are not feeling well. ***

CSU Lawncheck – is an on-site, lawn consultation service for home owners, for a fee of $75 per hour, per property. Currently, Boulder County is not offering Lawnchecks due to COVID19. CSU LawnCheck

Tree Team Site Visits – Tree Team site visits are available for home owners, for a visual diagnosis of up to 2 trees per property. Fee $25 per tree. Contact the Master Gardener Help Desk at mggpa@bouldercounty.org to begin the diagnostic process for helping solve your tree issue.

HOA Site Visits are on-site consultations provided to property managers and HOA landscape committees for a fee of $75 per hour. To schedule your site visit, email ddavidson@bouldercounty.org.

Green Industry Site Visits are on-site visits for people working in the green industry (nurseries, arborists, landscape professionals, design, etc). To schedule your site visit email ddavidson@bouldercounty.org.

Keeping ahead of COVID-19

This rapidly evolving coronavirus (COVID-19) has imposed an unsettling, fluid situation upon our community and its businesses. While the team here still aims to maintain a “business as usual” approach, we are making a number of significant changes to our operations to account for a situation that is far from normal.