Soil and Plant Additives

​​​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:

  • Need a soil and plant additive license, renewable annually and valid October 1-September 30.​
  • Need product permits for each brand name and formulation, valid until you change the label or formulation.
  • Must submit an annual tonnage report and pay tonnage fees of $0.45/ton on products distributed in Wisconsin.
  • May also need a fertilizer dealer license if you distribute products that also make plant nutrient claims.

The license is $25/year. Permits are $100/product, a one-time charge.


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