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Colusa County, CA Landscaping Rules: Weed Ordinances (2026)

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

Key Facts

Numeric height limit
none set by this section
Standard
keep landscaping weed and debris free
Trigger size
landscape 2,500+ sq ft
Parking-lot rule
§44-3.20.060 mirrors duty
Max penalty
$5,000 fine / 6 months jail

Summary

Unincorporated Colusa County's Zoning Code doesn't set a numeric weed-height limit, but Section 44-3.10.020(G) calls for landscaped areas on qualifying projects to be kept free of debris, trash and weeds, with plant material that needs pruning or mowing maintained on a periodic basis so it doesn't overgrow or visually deteriorate.

These county ordinances apply to unincorporated areas of Colusa County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

G. Maintenance. All landscaped areas should be kept free of debris, trash, weeds, and other unsightly material. Landscape material requiring pruning or mowing should be maintained on a periodic basis to avoid overgrowth and visual deterioration.

Full Breakdown

010 to new construction or rehabilitated landscapes of 2,500 square feet or more that need a building permit, plan check or zoning permit, in the urban residential (R-1 to R-4), commercial (C-1, C-2, C-H, C-R, MU), industrial (M-1, M-2, RD) and recreational (G-R) zones. 020(G) does not set a specific weed height in inches; instead it directs that landscaped areas be kept free of debris, trash, weeds and other unsightly material, and that landscape material needing pruning or mowing be maintained on a periodic basis to avoid overgrowth and visual deterioration.

060 for interior parking-lot landscaping, requiring plant materials there to be kept free from weeds, debris and undesirable materials, with damaged plantings replaced under the approved landscape plan. Both provisions sit within the county's landscaping article and are checked by the Department of Planning and Building against the landscape plan approved for the project, rather than through a separate weed-abatement inspection program.

Violations & Fines

The Zoning Code doesn't attach a standalone citation schedule to overgrown weeds; upkeep is measured against the landscape plan the Department of Planning and Building approved for the project. A property that lets required landscaping deteriorate can be pursued under the Zoning Code's general public-nuisance and abatement provisions at Section 44-1.130.040, and violations of the underlying landscape conditions fall under Section 44-1.130.030: a misdemeanor punishable by up to a $5,000 fine, up to six months in jail, or both, with abatement required under Chapter 42.

Frequently Asked Questions

Does unincorporated Colusa County set a maximum weed height?
The Zoning Code doesn't give a specific inch or foot limit. Section 44-3.10.020(G) instead requires landscaped areas on qualifying projects to be kept free of debris, trash and weeds, with material needing pruning or mowing maintained periodically to prevent overgrowth.
What triggers the landscape maintenance duty?
It attaches to landscape plans required under Section 44-3.10.010: new construction or rehabilitated landscapes of 2,500 square feet or more needing a building permit, plan check or zoning permit, within the county's urban residential, commercial, industrial and recreational zones.
What can the county do about a neglected required landscape?
An overgrown or weed-choked required landscape can be pursued as a public nuisance under Section 44-1.130.040, with violations of the underlying conditions punishable under Section 44-1.130.030 by up to a $5,000 fine, six months in jail, or both.

Sources & Official References

Other rules in Colusa County

All Colusa County rules

How Colusa County compares: Cities with the Strictest Weed and Property Maintenance Rules·California rules heatmap·Compare Colusa County to another location·View the California landscaping rules overview

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