Norman, OK Landscaping Rules: Weed Ordinances (2026)

Section 16-310 of the Norman Code of Ordinances bars any owner, occupant, or person in charge of property, platted or unplatted and regardless of zoning, from letting it become covered or overgrown with weeds; the tree lawn between a private lot and the midline of an abutting right-of-way counts as part of the private lot for mowing purposes. "Weed" is defined to include poison ivy, poison oak, poison sumac, and any vegetation exceeding 12 inches in height, except healthy trees, shrubs, or tended garden produce, plus anything that harbors trash, rodents, or vermin, gives off noxious odors, creates a fire or traffic hazard, or is dead or diseased.

Land zoned A-1 general agricultural or A-2 rural agricultural is exempt, as are unplatted tracts over 10 acres, unless either abuts a residential, commercial, or industrial zone or a parkway, sidewalk, or street, in which case a 50-foot buffer strip along the shared line must still be maintained. Tended crops on agricultural land more than 150 feet from a non-agricultural parcel are excluded from the weed definition entirely. Before the City abates a violation, it must mail 10 days' notice to the address on the current county tax roll, obtain a mailing receipt, and post the property; notice may also run by one newspaper publication at least 10 days ahead.

If a property is abated once, any regrowth within six months can be summarily mowed without further notice, though the City must still tell the owner afterward and bill the costs.