---
type: "Bill"
title: "Neonic Pesticides As Limited-use Pesticides"
description: "The act requires that, on or before January 1, 2024, the commissioner of agriculture adopt rules requiring neonicotinoid pesticides to be designated as limited-use pesticides and authorizing only licensed dealers to sell them. Products containing neonicotinoid active ingredients used in academic research are exempted from the limited-use pesticide designation, as are the following products that contain neonicotinoid active ingredients and for which the product label includes an intended use as:"
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2023A"
identifier: "SB 23-266"
citation: "Colorado SB 23-266 (2023A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Cathy Kipp", "Kevin Priola", "Kyle Brown", "Sonya Jaquez Lewis"]
version_count: 9
action_count: 15
vote_count: 4
first_action: "2023-04-04T06:00:00+00:00"
last_action: "2023-05-17T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/7fbf9364-222f-4505-aa3e-16b133ea2de4"
source_url: "https://leg.colorado.gov/bills/sb23-266"
source_hash: "afd6c7be633eb173d0c706541fce06c55353a59c68725d95bedf775654701323"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-co"]
---

# Colorado SB 23-266 (2023A) — Neonic Pesticides As Limited-use Pesticides

The act requires that, on or before January 1, 2024, the commissioner of agriculture adopt rules requiring neonicotinoid pesticides to be designated as limited-use pesticides and authorizing only licensed dealers to sell them. Products containing neonicotinoid active ingredients used in academic research are exempted from the limited-use pesticide designation, as are the following products that contain neonicotinoid active ingredients and for which the product label includes an intended use as:

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Committee Amendment** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_sb266_h_awn_001.pdf)
2. **Engrossed (04/19/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_266_eng.pdf)
3. **Final Act (05/08/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_266_enr.pdf)
4. **Introduced (04/04/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_266_01.pdf)
5. **PA1 (04/14/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_266_s_agr_01.pdf)
6. **Reengrossed (04/20/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_266_ren.pdf)
7. **Rerevised (04/29/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_266_rer.pdf)
8. **Revised (04/26/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_266_rev.pdf)
9. **Signed Act (05/17/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_266_signed.pdf)

## Votes

- BILL — **27–8** (pass) · upper
- BILL — **46–19** (pass) · lower
- CONCUR — **31–4** (pass) · upper
- REPASS — **26–9** (pass) · upper

## Sponsors

- Cathy Kipp — primary (person)
- Kevin Priola — primary (person)
- Kyle Brown — primary (person)
- Sonya Jaquez Lewis — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-05-17T06:00:00+00:00** Governor Signed `executive-signature`
- **2023-05-09T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2023-05-08T06:00:00+00:00** Signed by the Speaker of the House
- **2023-05-08T06:00:00+00:00** Signed by the President of the Senate
- **2023-05-02T06:00:00+00:00** Senate Considered House Amendments - Result was to Concur - Repass
- **2023-04-29T06:00:00+00:00** House Third Reading Passed - No Amendments `passage, reading-3`
- **2023-04-27T06:00:00+00:00** House Third Reading Laid Over Daily - No Amendments
- **2023-04-26T06:00:00+00:00** House Second Reading Special Order - Passed with Amendments - Floor
- **2023-04-24T06:00:00+00:00** House Committee on Agriculture, Water & Natural Resources Refer Unamended to House Committee of the Whole `committee-passage, referral-committee`
- **2023-04-20T06:00:00+00:00** Introduced In House - Assigned to Agriculture, Water & Natural Resources `introduction`
- **2023-04-20T06:00:00+00:00** Senate Third Reading Passed - No Amendments `passage, reading-3`
- **2023-04-19T06:00:00+00:00** Senate Second Reading Special Order - Passed with Amendments - Committee
- **2023-04-18T06:00:00+00:00** Senate Committee on Appropriations Refer Unamended to Senate Committee of the Whole `committee-passage, referral-committee`
- **2023-04-13T06:00:00+00:00** Senate Committee on Agriculture & Natural Resources Refer Amended to Appropriations `referral-committee`
- **2023-04-04T06:00:00+00:00** Introduced In Senate - Assigned to Agriculture & Natural Resources `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/7fbf9364-222f-4505-aa3e-16b133ea2de4`. Confidence: reported (aggregated from official Colorado legislature records).