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Commercial Fertilizer Dealers

To distribute fertilizer products in Wisconsin you must:

Have an annual license, valid October 1-September 30.
Annually report tonnage and pay tonnage fees of $0.62/ton of fertilizer distributed in Wisconsin.
For products that also contain soil and plant additive substances, obtain a soil and plant additive license and permit for the product

Current license holders receive renewal packets by mail, along with forms to report tonnage. New applicants can download application materials here.

Forms

Commercial fertilizer license application

Permit to distribute nonagricultural or special-use fertilizer

Commercial tonnage report form

Fertilizer and soil or plant additive export certificate of free sale application

Request for Social Security number form

Non-Agricultural and Special-Use Fertilizer Permits

If you distribute low-analysis fertilizers, you will need either a non-agricultural or special-use permit. Low-analysis fertilizers have less than 24 percent N-P-K. These permits remain in effect until you change the product's label or formulation.

Non-agricultural fertilizers are used on gardens, lawns, golf courses, greenhouses and nurseries and other non-farm uses, and for research.
Special-use fertilizers are for product labeled for remedying nutrient deficiencies unique to certain crops or local areas
You may also need a soil or plant additive license and permit if the fertilizer product also include substances that claim to improve plant growth, crop yield or quality, or soil properties.