Invasive Plant Rules in Santa Clara County, CA (2026)

1 county-level rule, plus city-specific rules for 2 cities in Santa Clara County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Santa Clara County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Prohibited Species

New landscape and irrigation projects on unincorporated Santa Clara County land can't use California Invasive Plant Council-listed species; the county's Landscape Design Plan review flatly bans them under Section B33-9.

Invasive Plants Banned in Santa Clara County Landscaping

Some Restrictions

Santa Clara County Ordinance Code § B33-9

Section 492.6 (Landscape Design Plan), subdivision (a)(1)(G), of the MWELO is amended to read as follows: (G) The use of invasive plant species, such as those listed by the California Invasive Plant Council, is prohibited.

Full ordinance details →Official source ↗

Invasive Plant Rules by City in Santa Clara County

2 cities in Santa Clara County have their own invasive plant rules rules. Each link goes to that city's dedicated page with code citations.

San JosePop. 1,013,240

2 verified rules • Front Yard Gardens, Prohibited Species

Santa ClaraPop. 127,647

1 verified rule • Prohibited Species

All Santa Clara County ordinances

See every category we cover for Santa Clara County: parking, noise, fences, fires, animals, pools, and more.

Santa Clara County Ordinance Hub →