Found a bag of lawn fertilizer in the back of the shed that contains phosphorus? Here are options for using or disposing it while keeping within the Minnesota Phosphorus Lawn Fertilizer Law.
Under the Minnesota Phosphorus Law Fertilizer Law, fertilizers containing phosphorus cannot be used on lawns and turf in Minnesota unless one of the following situations exists:
When these situations do not exist, state law requires phosphorus-free lawn fertilizer is to be used. The nutrient value of a fertilizer is indicated by a series of three numbers printed on its container. The numbers represent percent nutrient content of nitrogen, phosphorous, and potassium, in that order. A fertilizer marked with 22-0-15, for example, is phosphorus-free as the middle number is zero
If you have a bag of phosphorus lawn fertilizer and do not fit into one of the four exemptions above, follow one of these options for using or disposing it. Be sure to determine whether your product is fertilizer only or a fertilizer that also contains a pesticide. Examples of fertilizers which contain pesticides are “weed and feed” products to control crabgrass or dandelions, or insect control products.
If fertilizer contains pesticides, as in a “weed & feed” or an insect control product:
If fertilizer does not contain pesticides:
Ron StrussRon.Struss@state.mn.us651-201-6269Pesticide & Fertilizer Management Division