Manteca, CA Invasive Plant Rules: Prohibited Species (2026)

No invasive plant species shall be introduced into the landscape.

D. Plant Grouping. Plants with similar water and cultural requirements (such as sun and climate) shall be grouped together in distinct hydrozones.

E. Planting Size, Spacing, and Planter Widths. In order to achieve an immediate effect of a landscape installation and to allow sustained growth of planting materials, minimum plant material sizes, plant spacing, and minimum planter widths (inside measurements) are as follows:

1. Trees. The minimum planting size for trees shall be 15 gallon, with 25 percent of all trees on a project site planted at a minimum 24-inch box size. For commercial, office, community/civic, and industrial development, tree spacing within perimeter planters along streets and abutting residential property shall be planted no farther apart on center than the mature diameter of the proposed species.

2. Planter Size. Planter for trees shall be a minimum of 5 feet wide by 5 feet long, consistent with the City's adopted master list of street trees and parking lot trees.

3. Shrubs. Shrub planting shall be a minimum 5-gallon size, with a 15-gallon minimum size required where an immediate landscape screen is required (e.g., screening of headlights from drive-through aisles). Vegetative shrubs and perennials shall be a minimum 1-gallon size. The minimum planter width for shrubs is 5 feet.

4.