Wisconsin Bans Phophorus In Lawn Fertilizer To Protect Drinking Water And Tourism Industry

Blue-green algae scum. Image credit:Washington State Dept. of Ecology.

Lawn grass only needs phosphorus to establish a root structure – one growing season. An established lawn needs virtually no phosphorus in the nitrogen/phosphorus/potash blend. Recognizing the need to protect Wisconsin’s lakes and rivers, which support a large and economically important tourism industry, and which provide drinking water for a large portion of Wisconsin’s residents, the State no longer allows sale of phosphorus-containing l…
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