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Cass County, ND Invasive Plant Rules: Prohibited Species (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Ordinance
#2016-1, county manual §38.29
Applies to
Construction sites and undeveloped lots
Excludes
Fargo and West Fargo city limits
Civil penalty
$80/day, capped at $4,000/year

Summary

Cass County requires construction sites and undeveloped lots to control noxious weeds under Ordinance #2016-1, with landowners subject to civil penalties up to $80 per day, capped at $4,000 annually, for violations.

City-specific rules exist: Fargo has its own prohibited species rules that differ from Cass County's county-level regulations. If you live in Fargo, check the city-specific page instead.

The purpose of this policy is to enforce the control of noxious weeds on residential, commercial/industrial construction sites and undeveloped lots within the county... Civil penalty: Failure to control noxious weeds on a construction site or undeveloped lot, the landowner is subject to a civil penalty in an amount not to exceed eighty dollars per day for each day of violation, subject to a maximum penalty of four thousand dollars per year.

Full Breakdown

Cass County's Ordinance #2016-1, adopted July 5, 2016 as manual section 38.29, requires anyone developing or building on a residential, commercial or industrial construction site, or holding an undeveloped lot in unincorporated Cass County, to submit a weed management plan to the county weed officer describing how noxious weeds will be controlled. Noxious weeds are those on North Dakota's statutory list under N.D.C.C. ch. 4.1-47. Landowners who fail to control noxious weeds face a civil penalty of up to $80 per day, capped at $4,000 per year, which becomes a lien against the property. Fargo and West Fargo are excluded.

Violations & Fines

Civil penalty up to $80 per day per violation, capped at $4,000 annually; unpaid penalties become a lien against the property under N.D.C.C. 4.1-47-31.

Frequently Asked Questions

Does this weed ordinance apply inside Fargo or West Fargo?
No. Ordinance #2016-1 expressly excludes the incorporated areas of Fargo and West Fargo; only unincorporated Cass County construction sites and undeveloped lots are covered.
What weeds count as 'noxious' under the ordinance?
Those on North Dakota's statutory noxious weed list, N.D.C.C. ch. 4.1-47. Merely 'troublesome' or invasive weeds are encouraged to be controlled but carry no fine.
Who receives the required weed management plan?
The Cass County Weed Officer, alongside the building permit filed with the planning office that has jurisdiction over the site.

Sources & Official References

Other rules in Cass County

All Cass County rules

Compare Cass County to another location·View the North Dakota invasive plant rules overview

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Prohibited Species in Cities Across Cass County