Lawn Fertilizer and When to Apply It

Plainview Water District Urges Residents to be Responsible With Lawn Chemicals and Fertilizers

As part of its Preserve Plainview initiative, the Plainview Water District would like to remind residents about the impacts that premature and excessive lawn fertilizing has on our environment and water supply. The District implores all residents to be mindful of the Nassau County “Fertilizer Law” that prohibits fertilizing prior to April 1 of each year.

“We want residents to enjoy their green lawns, but we want to make sure that they are being kept green in the most environmentally friendly way possible that complies with the rules and regulations of the county,” said Plainview Water District Chairman Marc Laykind. “To help protect our sole-source aquifer and other local water ways, we ask residents to adhere to Nassau County’s fertilizer law to help support our efforts of improving groundwater quality and protecting our environment.”

In accordance with Nassau County’s “Fertilizer Law,” all fertilizers are prohibited from being applied before April 1, 2022 and after November 15, 2022. Residents should always apply the minimum amount of lawn chemicals to the soil and make sure they are stored properly. Additionally, all fertilizers or other lawn chemicals must be kept in cool and dry locations inside of containers that are not prone to leaks. By following instructions listed on the packaging, homeowners can minimize the amount of fertilizer used, limit the amount that runs off into the ground and into our sewer systems so the impact to the environment can be kept to a minimum.

“Our weather is unpredictable this time of year and our region always seems to get some spring-like weather one day and then get hit with an end-of-March snowstorm or cold snap,” said PWD Commissioner Andrew Bader. “Applying fertilizers on frozen ground, or right before the ground refreezes, will take the fertilizers off your lawn and into our water ways. Save your money and our environment by ensuring you fertilize at the right time.”

Organic fertilizers—such as cotton seed meal, bone meal and manure—are other examples of effective alternatives to typical fertilizers that will benefit the environment. Biodegradable insecticides that break down to harmless substances in 2-to-21 days are also another effective yet safe way to treat your lawn.

“Purchasing the right type of fertilizer is as important as when you apply it to your lawn,” added PWD Commissioner Amanda Field. “We want people to remember that the water we drink comes from beneath our feet so the more chemicals and toxins we put on the ground, the more they leach into our groundwater. When levels of nitrogen increase in our groundwater, the only option we have is to invest in treatment to ensure those elevated groundwater levels are not reflected in our drinking water. This is why we urge people to use natural, organic fertilizers at the right times rather than fertilizers packed with harmful chemicals.”