Healthy Lawns, Clean Water

Suffolk County
Fertilizer Turf
Management Course
The date of the next
virtual course will
be held on Tuesday,
December 3nd, 2024
from 9:00am to 12:00pm on Zoom.
To register please
click on the
following link:
https://ccesuffolk.org/
events/2024/01/25/
suffolk-county-
fertilizer-turf-
management-course.
Contact Jamie at: jamie.carroll@suffolkcountyny.gov
or call (631) 853-7327 for more information.

To protect Long Island's waters, applying fertilizer in Suffolk County from November 1 to April 1 is prohibited. But you've come to the right place to find out how we can have Healthy lawns & Clean water.

About the law

Who, what, and why

For homeowners

Does your lawn need fertilizer?
How to care for your lawn
Seasonal tips

For retailers, landscapers, and lawn care professionals

How the law affects you
Fertilizer education opportunities
'Resource Guide' for employee training

Spread the word

Best management practices
Healthy Lawns/ Clean Water Brochure
Healthy Lawns/Clean Water Sign

Fertilizer Research Summary

We can have both!

On Long Island, we depend on our groundwater for drinking water. But the nitrogen fertilizer we apply to our lawns - especially when the grass is dormant - can move down through the soil and pollute our aquifer.

This site will help you manage your fertilizer and lawn to protect our groundwater - as well as our surface waters, bays, and estuaries - from pollution due to lawn fertilizers.

Help keep fertilizer out of our waters!

Image used by permission from the Washington State Department of Ecology.

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