CA Civ Proc Code Section 1250.130

Where the court orders service by publication, it shall also order the plaintiff (1) to post a copy of the summons and complaint on the property sought to be taken and (2), if not already recorded, to record a notice of the pendency of the proceeding in the manner provided by Section 1250.150. Such posting and recording shall be done not later than 10 days after the date the order is made.