Cal. Prob. Code § 2214

Notice of the hearing shall be given for the period and in the manner provided in Chapter 3 (commencing with Section 1460) of Part 1. In addition, the petitioner shall deliver pursuant to Section 1215 a notice of the time and place of the hearing and a copy of the petition to all persons required to be listed in the petition at least 15 days before the date set for the hearing.