Pesticide applicator license requirements in Colorado
Quick answer
Pesticide applicator license requirements in Colorado
Colorado pesticide applicator certification is issued by Colorado Department of Agriculture, Division of Plant Industry, Pesticide Applicator Certification and Licensing Program.
In Colorado, the exam you sit does not decide which license you get. Your documented field experience does.
Qualified Supervisor and Certified Operator: same exams, different paperwork
The Colorado Department of Agriculture licenses commercial individuals at two levels, Qualified Supervisor (QS) and Certified Operator (CO), and both take the same General Core exam plus at least one pest management category exam. Anyone may sit the QS exams. But a QS license is issued only when the application also documents the required field experience, which must have been earned within five years of the application date. Pass the QS exams without that experience and CDA issues a Certified Operator license instead. You then upgrade to QS later without retesting, as long as your CO licensure has been continuous. College credit in a field related to your pest management category can substitute for part of the required experience if you send an official transcript with the application. There is no experience requirement at all for a Certified Operator.
What it costs
| Item | Fee |
|---|---|
| Each exam (paid to Metro Institute) | $41.50 |
| QS or CO license, three years | $100 |
| Private Applicator license, three years | $75 |
| Reciprocal license | $150 |
| Add a category or upgrade CO to QS | No fee |
| Replacement license card | $10 |
| QS or CO late renewal within 30 days | $110 total |
| QS or CO reinstatement, 30 days to six months late | $200 total |
Exams are delivered online under proctor supervision through Metro Institute and Colorado State University Extension at locations across the state. They must be paid for and scheduled at least two days ahead, so same-day testing is not possible, and passing scores stay valid for one year. Private applicator licenses expire on the licensee’s birthday, three years out.
Category numbers you will actually see
Colorado does not use the familiar national category letters. It uses a three-digit numbering scheme grouped by discipline: 101 through 114 and 309A for agricultural work, 206 and 207 for turf and ornamental, and 301 through 309B for structural. A few are unusually specific, including 113 for metam sodium root control in sewers and 308 for post-harvest potato pest control, which was split out of the stored commodities category in 2016. Category 114 covers aerial application and explicitly includes unmanned aerial vehicles alongside fixed and rotary wing aircraft.
Two categories carry a proximity rule worth knowing before you bid a job: forest pest control (106) and rangeland pest control (107) require the ornamental or turf category respectively for applications made within fifty feet of a residential or commercial structure, along with the posting and notification duties in section 35-10-112 of the Pesticide Applicators’ Act.
Continuing education
To renew without retesting, a QS, CO, or private applicator must accumulate seven core continuing education credits before the license expires: two in laws and regulations, and one each in pesticides and their families, applicator safety, public safety, environmental protection, and use of pesticides. QS and CO licensees add one pest management credit per licensed category, except turf (206), ornamental (207), and residential/commercial (304), which each require two. Private applicators need only the seven core credits plus any fumigation or aerial endorsement credits. There is no grace period: miss the credits and you retest.
Reciprocity
Colorado runs a real reciprocal pathway, but a narrow one. An out-of-state applicator can be licensed without examination at the Certified Operator level only, for whatever time remains on the out-of-state credential, with a $150 fee and a letter of good standing mapping the categories held to Colorado’s equivalents. Reciprocal licenses are never renewed, only reapplied for, and continuing education credits do not apply to them. Colorado also refuses to issue a reciprocal license based on another state’s reciprocal license.
The pesticide label is always the controlling legal document for how a product may be applied, regardless of which license you hold.
Sources
- CDA Qualified Supervisor and Certified Operator licensing information: ag.colorado.gov/pesticide-licensing-faqs/qualified-supervisor-and-certified-operator-licensing-information
- CDA Private Applicator licensing information: ag.colorado.gov/pesticide-licensing-faqs/private-applicator-licensing-information
- CDA pesticide license categories and CEC requirements: ag.colorado.gov/plants/pesticides/pesticide-license-categories
- CDA Pesticide Program: (303) 869-9065 for QS and CO, (303) 869-9064 for private applicators
For the full ordered national sequence, see how to become a pesticide applicator, the category finder, and the calibration workflow.