Iowa City, IA Landscaping Rules: Grass Height Limits (2026)

Iowa City's grass and weed height standard is set by Title 6 (Public Health and Safety), Chapter 3 (Weed Control) of the City Code, administered by the Department of Neighborhood and Development Services and the Housing Inspection Services division. Section 6-3-2 declares it a nuisance for an owner or person in possession or control of any developed or undeveloped lot or land area to fail to keep the lot free of weeds and to keep grasses mowed to less than ten inches (10") in height. Section 6-3-1 defines key terms, including 'noxious weeds' (primary and secondary classes under Iowa Code Chapter 317 and the Iowa Administrative Code), 'natural area' (land retaining native plant material in a prairie state), 'conservation area' (planted with ground cover compatible with the environment), and 'unmowed or untended area' (weeds and grasses over 10" without care and supervision). Iowa Code §364.12(2)(b) authorizes Iowa municipalities to require property owners to keep abutting parking strips and lots free of growth and to charge the cost of abatement against the property. The complaint-driven process: an inspector verifies whether grass/weeds are 10 inches or taller, posts a notice, mails a letter of violation, and gives the owner seven days to mow. On the eighth day the inspector returns; if not mowed, the City hires an outside contractor to mow and bills the property owner plus a $100 administrative fee.