Did you know that all fertilizer applied by hired landscapers must be phosphorus-free unless you have a soil test showing phosphorus deficiency?
In Illinois, legislation was passed in 2011 to prevent its overuse. This was done because of concern for water quality, and the result of environmental studies showing that excess phosphorus and nitrogen are partly responsible for declining surface water quality. These nutrients have been linked to excessive seasonal algae growth in ponds streams and lakes. These blooms of algae can make the water smell and taste bad and decrease its recreational value. In severe cases, the algae deplete oxygen levels, which may kill fish.
Need more info? Check out the McHenry County Green Guide.