California Code, Food and Agricultural Code (Formerly Agricultural Code) - FAC § 8772

(a) The board shall, on or before the first Monday in July of each year, file with the board of supervisors a list of assessor parcel numbers that sets forth all assessments of the district for the fiscal year commencing on the first day of July. At the same time, a copy of the list shall also be filed with the auditor of the county.

(b) The board of supervisors shall annually, at the time of levying county taxes, levy a special assessment upon all the olive, stone, or pome fruit trees planted or growing in the district regardless of age, as submitted by the district pursuant to subdivision (a). The special assessment shall be added to the secured roll and collected by the county on behalf of the district in the same manner that the county collects county taxes.