--- title: "Winterizer Fertilizer: The Last Call for LI Lawns" description: Before the ground freezes in Suffolk, your lawn needs one final meal. Learn how LawnProNY winterizer protects your roots until spring. image: https://www.lawnprony.com/hubfs/Lawn%20Pro%20Showcase%20Home%20and%20Garden.png --- [631.473.3396](tel:(631)%20473-3396) [contact@LawnProNY.com](mailto:contact@lawnprony.com) [Login & Pay Online](https://lawngateway.com/LawnProAmerica/Login_New.aspx) [![FULL\_COLOR](https://www.lawnprony.com/hubfs/Logos/FULL_COLOR.svg)](https://www.lawnprony.com) ![hamburger](https://21644591.fs1.hubspotusercontent-na1.net/hubfs/21644591/hamburger.png) ![close](https://21644591.fs1.hubspotusercontent-na1.net/hubfs/21644591/close.png) - [Our Programs](https://www.lawnprony.com/our-program) Show submenu for Our Programs - [Lawn Pro Foundations](https://www.lawnprony.com/our-program#hs_cos_wrapper_widget_1775612415905) - [Deer-Tick-Mosquito Protection](https://www.lawnprony.com/our-program#hs_cos_wrapper_module_1775615912747) - [Aeration & Seeding](https://www.lawnprony.com/our-program#hs_cos_wrapper_module_1787071069322) - [Ultimate Success Plan](https://www.lawnprony.com/ultimate-success-plan) - [Client Resources](https://www.lawnprony.com/customer-resources) Show submenu for Client Resources - [Client Portal Pro](https://www.lawnprony.com/client-portal) - [FAQ](https://www.lawnprony.com/faq) - [Pay Online](https://lawngateway.com/LawnProAmerica/Login_New.aspx) - [Refer A Friend](https://www.lawnprony.com/refer-a-friend) - [Labels & MSDS](https://www.lawnprony.com/labels-msds) - [Blog](https://www.lawnprony.com/blog) - [Contact Us](https://www.lawnprony.com/contact-us) - [Property Managers](https://www.lawnprony.com/property-managers-hoa-boards) - [Our Programs](https://www.lawnprony.com/our-program) Show submenu for Our Programs - [Lawn Pro Foundations](https://www.lawnprony.com/our-program#hs_cos_wrapper_widget_1775612415905) - [Deer-Tick-Mosquito Protection](https://www.lawnprony.com/our-program#hs_cos_wrapper_module_1775615912747) - [Aeration & Seeding](https://www.lawnprony.com/our-program#hs_cos_wrapper_module_1787071069322) - [Ultimate Success Plan](https://www.lawnprony.com/ultimate-success-plan) - [Client Resources](https://www.lawnprony.com/customer-resources) Show submenu for Client Resources - [Client Portal Pro](https://www.lawnprony.com/client-portal) - [FAQ](https://www.lawnprony.com/faq) - [Pay Online](https://lawngateway.com/LawnProAmerica/Login_New.aspx) - [Refer A Friend](https://www.lawnprony.com/refer-a-friend) - [Labels & MSDS](https://www.lawnprony.com/labels-msds) - [Blog](https://www.lawnprony.com/blog) - [Contact Us](https://www.lawnprony.com/contact-us) - [Property Managers](https://www.lawnprony.com/property-managers-hoa-boards) [Request a Quote](https://www.lawnprony.com/quote-request-old) [Lawn Health](https://www.lawnprony.com/blog/tag/lawn-health), [Fall Prep](https://www.lawnprony.com/blog/tag/fall-prep) # Winterizer Fertilizer: The Last Call for Long Island Lawns [By- Q,](https://www.lawnprony.com/blog/author/q) 2 November 2026 ![](https://www.lawnprony.com/hubfs/Lawn%20Pro%20Showcase%20Home%20and%20Garden.png) ### **Don't Let Your Lawn Go to Bed Hungry** As we close in on Thanksgiving, it's tempting to pack up the yard tools for the season. But the most important "meal" of the year for your lawn in Miller Place, Smithtown, and Huntington is happening right now. While the blades are slowing down, the roots are still active, soaking up nitrogen and potassium to build up reserves for winter. ### **The Deadline That Makes Timing Non-Negotiable** Suffolk County Law 41-2007 prohibits fertilizer application to lawns between November 1 and April 1, with fines up to $1,000 for violators. That's not a suggestion, it's the law, and it means this final winterizer application has to land before the window closes. At LawnProNY, we build our fall schedule around that deadline every year. The lawns that get this last feeding are the first ones green in April, while the neighbors are still looking at brown, patchy turf. ###### Search Search ###### Category - [Lawn Health](https://www.lawnprony.com/blog/tag/lawn-health) - [Tips & Tricks](https://www.lawnprony.com/blog/tag/tips-tricks) - [Pest Control](https://www.lawnprony.com/blog/tag/pest-control) - [Fall Prep](https://www.lawnprony.com/blog/tag/fall-prep) - [Seasons](https://www.lawnprony.com/blog/tag/seasons) - [Property Safety](https://www.lawnprony.com/blog/tag/property-safety) - [Deer Repellent](https://www.lawnprony.com/blog/tag/deer-repellent) - [Weather](https://www.lawnprony.com/blog/tag/weather) - [Mowing Tips](https://www.lawnprony.com/blog/tag/mowing-tips) - [Season Awakening](https://www.lawnprony.com/blog/tag/season-awakening) - [Ticks](https://www.lawnprony.com/blog/tag/ticks) - [Clean Up](https://www.lawnprony.com/blog/tag/clean-up) - [Spring](https://www.lawnprony.com/blog/tag/spring) - [Summer](https://www.lawnprony.com/blog/tag/summer) - [Backyard Fun](https://www.lawnprony.com/blog/tag/backyard-fun) - [Fall Health](https://www.lawnprony.com/blog/tag/fall-health) - [Mosquito](https://www.lawnprony.com/blog/tag/mosquito) - [Summer Care](https://www.lawnprony.com/blog/tag/summer-care) - [Tick Safety](https://www.lawnprony.com/blog/tag/tick-safety) - [Watering](https://www.lawnprony.com/blog/tag/watering) - [Winter Prep](https://www.lawnprony.com/blog/tag/winter-prep) - [Coastal Care](https://www.lawnprony.com/blog/tag/coastal-care) - [Fungus Prevention](https://www.lawnprony.com/blog/tag/fungus-prevention) - [Grass Seeding](https://www.lawnprony.com/blog/tag/grass-seeding) - [Mosquito Protection](https://www.lawnprony.com/blog/tag/mosquito-protection) - [Spring Cleanup](https://www.lawnprony.com/blog/tag/spring-cleanup) - [Winter Health](https://www.lawnprony.com/blog/tag/winter-health) ###### Popular Post - [Fungus Trouble? Tips for your Long Island Lawn](https://www.lawnprony.com/blog/revitalize-your-lawn-spring-lawn-care-tips-for-long-island-0-0) - [Fall Lawn Care Tips for Long Island Homes](https://www.lawnprony.com/blog/revitalize-your-lawn-spring-lawn-care-tips-for-long-island-0-1) - [Revitalize Your Lawn: Spring Lawn Care Tips for Long Island](https://www.lawnprony.com/blog/revitalize-your-lawn-spring-lawn-care-tips-for-long-island) - [September's Golden Window for Lawn Aeration and Seeding on Long Island](https://www.lawnprony.com/blog/septembers-golden-window-for-lawn-aeration-and-seeding-on-long-island) - [Top Summer Lawn Care Tips for Long Island](https://www.lawnprony.com/blog/revitalize-your-lawn-spring-lawn-care-tips-for-long-island-0) ###### Subscribe [![Logo OBE](https://www.lawnprony.com/hubfs/Logos/Logo%20OBE.png)](https://www.lawnprony.com) For over 40 years, Lawn Pro has created a customized lawn-care solution for residential and commercial clients throughout Suffolk & Nassau County. - - - ##### Resources [Client Portal Pro](https://www.lawnprony.com/client-portal) [Pay Online](https://lawngateway.com/LawnProAmerica/Login_New.aspx) [FAQ](https://www.lawnprony.com/faq) [Labels & MSDS](https://www.lawnprony.com/labels-msdshttp://22819825.hs-sites.com/labels-msds) ##### Get In Touch [631.473.3396](tel:+16314733396) [contact@lawnprony.com](mailto:contact@lawnprony.com) Copyright © 2022 Lawn Pro America LLC. 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