Standard Requirements

Lawn Service Fertilizer (custom application) Companies

Please note, a person may not custom apply specialty fertilizers unless a label, invoice, or delivery ticket is provided to each customer stating in clear, legible, and conspicuous form the following information. In addition, copies of invoices or delivery tickets must be kept for five (5) years after the sale, delivery, or application of fertilizer, according to Minn. Stat. 18C & Minnesota Rules, 1510.0410 to 1510.0422.

A label must contain:

  1. The Guaranteed Analysis statement in the following format:


Total Nitrogen (N)


___% Ammoniacal Nitrogen

___% Urea Nitrogen

___% Water Insoluble Nitrogen

___% (Other recognized and determinable forms of N)
Note: The forms of N, when listed, must add up to the Total Nitrogen (N) guarantee *

Available Phosphate (P2O5)


Soluble Potash (K2O)


*Total Nitrogen (N) guarantee - The nitrogen breakdown statement is only required when slow release or organic nitrogen properties are claimed or guaranteed.

When other plant nutrients in addition to nitrogen (N), available phosphate (P205) and soluble potash (K2O) are guaranteed, they must be listed in columnar form immediately below the primary nutrient guarantees and be in the order and minimum percentages listed below:

Soluble Potash (K2O)


Calcium (Ca)

1.00 %

Magnesium (Mg)

0.50 %

Sulfur (S)

1.00 %

___% Combined Sulfur (S)


___% Free Sulfur (S)


Boron (B)

0.02 %

Chlorine (Cl)

0.10 %

Cobalt (Co)


Copper (Cu)

0.05 %

Iron (Fe)

0.10 %

Manganese (Mn)

0.05 %

Molybdenum (Mo)


Sodium (Na)

0.10 %

Zinc (Zn)

0.05 %

Plant nutrient derived from:_________________


Note: If the percentage of any plant nutrient is zero, the plant nutrient must be omitted from the guaranteed analysis statement.

  1. Derivative Statement must be placed immediately below the guaranteed analysis statement. Sources of plant nutrients shall be listed by their common or usual English name for the ingredient. In addition, materials not used to blend a fertilizer may not be listed in the derivative statement. This includes but is not limited to lime fillers.
  2. The Name and Address of the Guarantor (Lawn Service Firm Name and Address).
  3. A Net Weight statement which may be listed as the total net weight applied or the net weight applied per unit treated.
  4. The number of units treated in square feet, acres, or another unit of measure.

The preceding specifications are the minimum requirements to be placed on a lawn service fertilizer (custom application) product label. If additional information is provided on the label, further labeling requirements may be enforced. Therefore, it is advisable to consult with our department for a label review prior to final printing. In addition, we suggest you review Minnesota Rules, 1510.0410 to 1510.0422, the Fertilizer Labeling Rules, before printing a label.

The above is a suggested format. Alternative formats may be used provided they are MDA approved.