Application of fertilizer that contains nitrogen and/or phosphorus is prohibited during the days. 

Fertilizer application is prohibited in any areas within 25 feet of any body of water or wetland.

If you have seeded or laid sod you must wait 30 days before applying fertilizer. 

You must use a Deflector Shield if using Broadcast Spreader.

Commercial applicators are not exempt from any of the fertilizer rules 

All fertilizer labels have three bold numbers these are three main nutrients for your lawn to thrive.

UF/IFAS recommends 1IB of actual nitrogen, per 1000 sq. ft of turfgrass

Look for "slow release" source of nitrogen at least 30% of nitrogen in your application must be from a slow release source. These ingredients will be listed on the label.

Common slow release sources include urea-formaldehyde (38%) nitrogen, methylene-urea (40%) nitrogen, Isobutylene-diurea  (31%) nitrogen, Sulfur coated-urea (36-39%) nitrogen, and polymer coated-urea (40-44%) nitrogen

We typically have enough natural phosphorus in our soil. Try to select a fertilizer with low or 0 phosphorus rates.