Rancho Cucamonga, CA Tree Protection: Parkway Planting (2026)

050 (General Landscape Development Standards) governs parkway and street tree planting citywide. Subsection B requires trees along sidewalks and primary street frontage on top of other landscaping requirements, and subsection H limits species to the city's adopted master list of street trees and parking lot trees, so a developer cannot substitute an off-list species without an exception. Subsection I requires any tree planted within ten feet of a street, sidewalk, paved trail, or walkway to be a deep-rooted species or separated from the hardscape by a root barrier, protecting curbs and sidewalks from heaving.

Subsection K sets the minimum planting size for trees at 15-gallon container stock, with 25 percent of all trees on a project site required to be at least 24-inch box size; spacing within perimeter planters along streets and abutting residential property cannot exceed the mature diameter of the proposed species, and planter widths must run between five and ten feet. 2: buildings over 200,000 square feet of gross floor area must plant at minimum 24-inch box size, with a quarter of those trees at 36-inch box.

In the wildland-urban interface fire area, subsection J bars species identified as fire-prone or specifically prohibited by the fire district. 040, with a preliminary plan approved first and a final plan, stamped by a licensed landscape architect, submitted before building permits issue.