New York Consolidated Laws, Environmental Conservation Law - ENV § 17-2103. Sale or use of phosphorus fertilizer restricted

(a) A soil test indicates that additional phosphorus is needed for growth of that lawn or non-agricultural turf;  or

(b) The phosphorus fertilizer is used for newly established lawn or non-agricultural turf during the first growing season.

(a) lawn or non-agricultural turf between December first and April first, annually;

(b) any impervious surface including parking lots, roadways, and sidewalks.  If such application occurs, the fertilizer must be immediately contained and either legally applied to lawn or non-agricultural turf or placed in an appropriate container;  or

(c) any lawn or non-agricultural turf on any real property within twenty feet of any surface water, except that this restriction shall not apply where a continuous natural vegetative buffer, at least ten feet wide, separates an area of lawn or non-agricultural turf and surface water, and except that, where a spreader guard, deflector shield or drop spreader is used to apply fertilizer, such application may not occur within three feet of any surface water.  This paragraph shall not apply to an application of fertilizer for newly established lawn or non-agricultural turf during the first growing season.