Invasive Plant Rules in Washington County, UT (2026)
1 county-level rule, plus city-specific rules for 1 city in Washington County, Utah.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Washington County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Prohibited Species
Washington County bars planting any invasive plant species the county identifies, as part of the Plant Selection standard that governs all new and rehabilitated landscaping in the unincorporated county. Compliant plants must instead be well suited to the local microclimate, native or locally adaptable, and grouped by water need.
Washington County Invasive Plant Planting Ban
Heavy RestrictionsWashington County Code of Ordinances § 10-27-5.A
Plant Selection: Plants shall be well-suited to the microclimate and soil conditions at the project site. Native, locally adaptable and environmentally sustainable plants are acceptable. See the Washington County Water Conservancy District's recommended plant list on wcwcd.org. Plants with similar water needs shall be grouped together as much as possible into hydrozones for efficient irrigation...
Invasive Plant Rules by City in Washington County
1 cities in Washington County have their own invasive plant rules rules. Each link goes to that city's dedicated page with code citations.
All Washington County ordinances
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