Clackamas County, OR Landscaping Rules: Weed Ordinances (2026)
Key Facts
- Grass-height ordinance
- None in unincorporated county
- Noxious vegetation
- Not required to remove
- Blackberry / ivy
- No removal mandate
- Noxious weed basis
- Oregon Dept. of Agriculture list
- Inside cities
- City height rules apply
Summary
No. Clackamas County has no ordinance addressing tall grass or weeds. The county states that properties outside city limits are not required to cut their grass or remove noxious vegetation such as blackberry vines or English ivy. Weed and grass-height rules exist only inside cities.
Clackamas County does not have an ordinance that addresses this issue. Properties in the county that are outside of city limits are not required to cut their grass or remove noxious vegetations such as blackberry vines or English Ivy.
Full Breakdown
The county is explicit: there is no county grass-height or weed ordinance for unincorporated land. Owners are not obligated to mow lawns, cut fields, or remove invasive vegetation like Himalayan blackberry or English ivy. The county's Noxious Weed program educates and coordinates on state-listed noxious weeds (per the Oregon Department of Agriculture classification) but does not impose a mow-your-lawn duty on residents. Residents bothered by a neighbor's overgrowth outside a city have no county remedy. In wildfire-hazard zones, separate defensible-space clearance obligations may apply. Cities such as Oregon City, Milwaukie, and Happy Valley enforce their own vegetation-height standards.
Violations & Fines
No county fine for tall grass or weeds outside city limits. Enforcement exists only for state-designated noxious-weed control programs and city-level ordinances.
Frequently Asked Questions
Can I make a neighbor cut their tall grass?
Does the county deal with invasive blackberry or ivy?
Sources & Official References
Other rules in Clackamas County
How Clackamas County compares: Cities with the Strictest Weed and Property Maintenance Rules·Compare Clackamas County to another location·View the Oregon landscaping rules overview
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