Spacing of plant materials required under this Chapter shall be as follows:
(a) Trees and large shrubs shall not be placed closer than four feet from the fence line or property line.
(b) Where plant materials are planted in two or more rows, planting shall be staggered in rows.
(c) Evergreen trees, as defined in Section 1136.20, shall be planted not more than 30 feet on centers.
(d) Narrow evergreens, as defined in Section 1136.20, shall be planted not more than three feet on centers.
(e) Deciduous trees shall be planted not more than 30 feet on centers.
(f) Tree-like shrubs shall be planted not more than ten feet on centers.
(g) Large deciduous shrubs shall be planted not more than four feet on centers.