Orange County has designated June 1 - September 30 a Restricted Season regarding lawn fertilization. No fertilizer containing Nitrogen or Phosphorus may be applied in Orange County during this time frame.
This restriction is in effect to protect Orange County's natural waterbodies. Run off from fertilizers containing Nitrogen and Phosphorus can cause algae blooms and poor water quality during this season of frequent rain events.
Please visit the link below to the Orange County webpage to learn more about using fertilizer responsibly, including application techniques and requirement timelines.