Ann Arbor's weed control is folded into its grass rule: section 3:16, titled Grass and Weeds, bars turf grass on private property above 12 inches. There is no separate county noxious-weed schedule; state noxious-weed authority runs under Michigan law.
Ann Arbor Chapter 40's section 3:16 is titled 'Grass and weeds' and caps private-property turf grass at 12 inches. Michigan's Noxious Weed Act (MCL 247.61 et seq.) makes local governments responsible for controlling designated noxious weeds, and cities/townships enforce overgrowth through their property-maintenance and weed sections, not through Washtenaw County. Ann Arbor abates non-compliant lawns after at least 3 days' notice, doing the work and billing the owner the actual cost plus a $50 administration fee, which becomes a special assessment against the property if unpaid within 45 days.
Civil infraction: not less than $100 first offense, $250 second, $500 each later offense in two years, up to $1,000; plus cut-and-bill cost and $50 admin fee.
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See how Washtenaw County's weed ordinances rules stack up against other locations.
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