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Twain Harte, CA Invasive Plant Rules: Prohibited Species (2026)

Some Restrictions

Verified 1 month ago|Source: CA Food & Ag Code §5004 →

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Key Facts

County List: None — defer to Ag Comm
State Law: F&A Code §5004
Key Invasives: Yellow starthistle, Scotch broom
Enforcement: Ag Commissioner

Tuolumne County rule: Twain Harte does not have its own ordinance for prohibited species. The rule below comes from Tuolumne County and applies to Twain Harte.

Summary

Tuolumne County defers to the Tuolumne County Agricultural Commissioner and California Food & Agriculture Code §5004 for noxious weed management. The county does not maintain its own prohibited plant species list.

Full Breakdown

Tuolumne County does not have a county-specific prohibited plant species ordinance. Noxious and invasive weed management is handled through the Tuolumne County Agricultural Commissioner's Office under California Food & Agriculture Code §5004, which authorizes county agricultural commissioners to maintain noxious weed lists and enforce abatement. Common invasive species in the Sierra foothills include yellow starthistle (Centaurea solstitialis), Scotch broom (Cytisus scoparius), and tree of heaven (Ailanthus altissima). The county's Hazardous Vegetation Ordinance addresses fire-risk vegetation but does not specifically target invasive species. Cal-IPC (California Invasive Plant Council) maintains statewide invasive species assessments.

Violations & Fines

Noxious weed violations: Agricultural Commissioner enforcement under Food & Ag Code §5004.

Frequently Asked Questions

Does Tuolumne County ban specific plants?

The county defers to the Agricultural Commissioner who enforces noxious weed lists under state law. No county-specific prohibited species list exists.

What invasive plants are a problem in Tuolumne County?

Yellow starthistle, Scotch broom, and tree of heaven are common invasives in the Sierra foothills. Contact the Ag Commissioner for local weed management guidance.

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Twain Harte, CA Invasive Plant Rules: Prohibited Species (2026)

Key Facts

Summary

California Food and Agricultural Code Section 5004

Full Breakdown

Violations & Fines

Frequently Asked Questions

Sources & Official References

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