Turf Fertilizer: Restrictions on Sale, Use and Display
Beginning April 1, 2010, fertilizer that is labeled as containing phosphorus or available phosphate cannot be applied to lawns or turf in Wisconsin unless the fertilizer application qualifies under certain exemptions.
The law was signed by Governor Doyle in April 2009 and the bill, 2009 Wisconsin Act 9 modified Chapter 94, Wisconsin Statutes. The intent of the law is to provide protection to Wisconsin’s lakes, rivers, streams and other water resources from phosphorus run-off.
The new law that restricts the use, sale and display of turf fertilizer labeled as containing phosphorus or available phosphate, will affect a number of groups including:
Specific Regulatory Language
Chapter 94, Wisconsin Statutes, Plant Industry – 34 page PDF
The specific changes are found in Ch. 94.643.
For more information on the turf fertilizer law, see the specific sections listed above, call 608-224-4541 or email