Here are answers to five key questions surrounding the fertilizer ordinance in Seminole County. Why is a fertilizer ordinance necessary? Because of that, fertilizer containing nitrogen and/or phosphorous needs to have specific management guidelines for fertilizer application in order to minimize negative impacts to those natural waterbodies. Lasting from June 1 to Sept. 30, the restricted season means fertilizer containing nitrogen or phosphorous cannot be applied to turf. Learn more about the countys fertilizer ordinance at fertilizeflorida.org or by clicking or tapping here.