Forms & Downloads

Complete the following steps for Fertilizer and/or Soil Conditioner/Plant Amendment registration in Colorado:

Fertilizer Registration

Registration Fees

  • If you are currently registered and just renewing you can do so on the AgLicense website. Contact our office to obtain your logon credentials.
  • If you are registering products for the first time, please call our office at (303) 867-9220 or email: curtis.phillips@state.co.us to start the registration process. We will create an online account for you and email registration and log in information. If you do not use a computer or the internet, contact us by phone or email and we will help you register your products.
  • The annual registration period is February 1 - January 31 of each year, and registrations must be renewed each year by January 31.
  • The product registration fee is $40.00/product. A late penalty fee of $40.00/product will be assessed on all product registration renewals paid after the due date of January 31.
  • Need to add new fertilizer, soil conditioner or plant amendment products? Login to your AgLicense account, click on Products, then click the button for 'Add New'. Follow the prompts to upload the labels for review and remit the registration fee online using a credit card or e-check.

Tonnage Fees

Tonnage fees are collected annually for the previous 12 months, January-December. Registrants will report and pay tonnage online by February 15th. If unable to report and pay online, please call the office (303) 867-9220 within the 45-day period ending February 15 each year, or the late penalty fee of 10% of the distribution fee, or $50.00 (whichever is greater) will be assessed.

  • Registrants, except those who package fertilizers in containers of 10 pounds or less, must report and pay a distribution fee of $.60/ton for all commercial fertilizers that are distributed in the State of Colorado.
  • Registrants of specialty fertilizers or small packages in containers of 10 pounds or less must pay a tonnage fee of $.01025/pound.
  • In your annual tonnage report, you must report the amount of tonnage and the county where each product is sold or distributed.

Please call Curtis Phillips with any questions at 303-867-9220 or email curtis.phillips@state.co.us.

Soil Conditioner/Plant Amendment Registration

Registration Fees

  • If you are currently registered and just renewing, you can do so on the AgLicense website. Contact our office to obtain your logon credentials.
  • If you are registering for the first time, please contact our office to register your company in Colorado.
  • The annual registration period is February 1 - January 31 of each year, and registrations must be renewed each year by January 31st.
  • The product registration fee is $40.00/product. A late penalty fee of $40.00/product will be assessed on all product registration renewals completed after the due date of January 31.

Tonnage Fees

Tonnage fees are collected annually for the previous 12 months January-December. Registrants will report and pay tonnage online by February 15th. A late penalty fee of 10% of the distribution fee, or $50.00 (whichever is greater) will be assessed.

  • Registrants of soil conditioners and/or plant amendments must pay a tonnage fee of $.10/ton

For more information on tonnage reporting, go to the Frequently Asked Questions page.

Please contact Laurel Hamling with any questions.

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PDF icon Fertilizer Registration Form.pdf821.83 KB