Soil or Plant Additives

New - changes are coming for the upcoming soil or plant additive license renewal and tonnage reporting term!

Do not submit your renewal materials until the new forms are available. The new versions of the 2024-2025 Soil or Plant Additive Tonnage Report and the 2025-2026 Soil or Plant Additive License Renewal Application will be posted by August 30, 2025.

Online licensing and tonnage reporting: New this year, you will be able to apply online for your annual Wisconsin license; report annual tonnage; apply for product permits; and pay fees on the Wisconsin Department of Agriculture, Trade and Consumer Protection website. Details on the online application process will follow.

Tonnage Reporting Change

  • For each licensed location, a separate tonnage report is required. Previously, a business with multiple locations submitted one tonnage report for all facilities. This can no longer be done. ​

New License Numbers

  • A six-digit number (e.g. 654321) will replace the previous 65-012345-012345 license number.
  • Tonnage reports will be assigned a six digit number, and will be linked to one specific license location.
  • A new six digit product permit number will be assigned to each soil or plant additive permit

Regulatory consultants: Prior to submitting online applications for your clients, contact us at datcpfert@wisconsin.gov so that we can provide online access.

​​​​​​​​​​​​​​​​​​Soil and plant additives are substances applied to seed, soil, or plants that claim to improve plant growth, crop yield or quality, or soil properties. To distribute soil and plant additives in Wisconsin, you must:

  • Have an annual soil or plant additive license, valid October 1-September 30. The license fee is $25/year.
  • Annually report tonnage and pay tonnage fees of $0.45/ton on products distributed in Wisconsin.
  • Obtain product permits for each brand name and formulation, valid until you change the label or formulation. Permits are $100/product, a o​ne-time charge.​
  • For products that also make plant nutrient claims, obtain a commercial fertilizer dealer license and if required a fertilizer permit​ for each product.​​

Current license holde​r​s will receive renewal packets by mail,​ including forms to report tonnage, in August. Current license holders can follow these instructions​ and download ​renewal materials below.​ Updated forms will be posted in ​​August. New applicants can follow these instructions​ and d​ownload application materials below.​