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Solano County, CA Invasive Plant Rules: Prohibited Species (2026)

Light Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing section
Solano County Code § 28.79(A)(3)
Prohibited species list
None adopted; general control duty only
Applies to
Resource Protection Use zoning approvals
Specific standards subsection
28.79(B) reserved, not yet adopted
First violation penalty
$100 under Sec. 10-24(b)(4)

Summary

Solano County does not keep a list of banned plants; instead, any Resource Protection Use zoning approval must show it will control invasive weeds, plants, or animals so they do not become a nuisance to neighboring land, under Section 28.79(A)(3).

City-specific rules exist: Vallejo, Vacaville, and Fairfield have their own prohibited species rules that differ from Solano County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

3. Shall show that adequate controls or measures will be taken to prevent invasive weeds, plants or animals from becoming a nuisance to surrounding properties.

View official code

Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 1868, passed April 9, 2026).

Full Breakdown

79. 79(A)(3) requires that a resource protection use show that adequate controls or measures will be taken to prevent invasive weeds, plants or animals from becoming a nuisance to surrounding properties. This sits alongside two other general requirements in the same subsection: the use must be consistent with the 2008 Solano County General Plan as it may be amended, and it must show that adequate controls will prevent offensive noise, odor, dust, fumes, smoke, or vibration, and that traffic generated will not create a hazard to surrounding property.

79(B), is expressly marked reserved, meaning the county has not yet adopted use-by-use standards, such as a named prohibited species list, for particular resource protection activities; the general invasive-species control duty in (A)(3) is the operative standard until the county fills in subsection (B). Because this is a general permit finding rather than a specific prohibited-species table, compliance is evaluated project by project when a resource protection use goes through zoning review: an applicant proposing restoration, wetland, or similar habitat work has to describe the controls, such as removal protocols, monitoring, or containment measures, it will use to keep invasive weeds, plants, or animals proposed or attracted by the project from spreading onto neighboring parcels.

Violations & Fines

A resource protection use that allows invasive weeds, plants, or animals to spread onto neighboring property without the controls required by Section 28.79(A)(3) is subject to Solano County's standard nuisance abatement process under Chapter 10, beginning with a warning notice and notice of violation, and, if uncorrected, administrative penalties under Section 10-24(b)(4) of $100 for a first violation, $200 for a second, and $500 for a third or later violation within one year.

Frequently Asked Questions

Does Solano County have a list of banned invasive plant species?
No. The zoning code does not name specific prohibited species. Section 28.79(A)(3) instead requires any Resource Protection Use to show it will use adequate controls to prevent invasive weeds, plants, or animals from becoming a nuisance to neighboring property; the Specific Requirements subsection that might add a species list, 28.79(B), is marked reserved.
What kind of zoning use does the invasive species control rule apply to?
It applies to Resource Protection Uses under Chapter 28.79, the zoning category covering conservation, habitat, and similar land uses. The requirement is one of three general findings, along with General Plan consistency and nuisance controls for noise, odor, and traffic, that every Resource Protection Use application must satisfy.
What happens if an invasive species spreads from a resource protection project to a neighbor's land?
Solano County treats it through the standard nuisance abatement process in Chapter 10: a warning notice, then a notice of violation, and if uncorrected, administrative penalties starting at $100 for a first violation under Section 10-24(b)(4), rising to $500 for a third violation within a year.

Sources & Official References

Other rules in Solano County

All Solano County rules

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Prohibited Species in Cities Across Solano County