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Macon County, IL Landscaping Rules: Weed Ordinances (2026)

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

Key Facts

Height limit
12 inches
Where it applies
Subdivision lots and special-use-permit residential lots
Noxious weeds
Banned countywide, no height threshold (§ 90.18(B))
Abatement notice
15 days after written notice to owner
Fine
$50-$500 per day (§ 90.99(B))
Cost recovery
Lien under 55 ILCS 5/5-1099

Summary

In unincorporated Macon County, grass and weeds are capped at 12 inches on any lot inside a platted subdivision or on a lot with a residence under a County Board special use permit. Noxious weeds are banned countywide with no height threshold, and violators face a $50 to $500 fine per day.

These county ordinances apply to unincorporated areas of Macon County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

(A) No person or owner shall cause or permit weeds that have grown to a height in excess of 12 inches on any lot in any subdivision in the unincorporated area of the county, or on any lot where a residence exists pursuant to a special use permit granted by the County Board. (B) No person shall cause or permit noxious weeds to grow anywhere in the county.

Full Breakdown

18, Category 4 of the nuisance ordinance, sets a 12-inch height cap on weeds for two categories of unincorporated land: any lot located in a subdivision, and any lot carrying a residence under a special use permit the County Board has granted. 01 reaches beyond noxious plants to 'any weeds, underbrush, and grass,' so ordinary uncut grass on a covered lot counts toward the 12-inch limit. , to grow anywhere in the county, with no 12-inch threshold and no subdivision or special-use-permit limitation. 02. 03(A) and (D), the county must first mail written notice to the owner's last known address and give at least 15 days to cut the weeds; if the owner doesn't comply, the county can enter the property, cut the weeds itself, and place the cost as a lien on the property under 55 ILCS 5/5-1099. 04(E) treats that as a continuation of the original violation. 05.

Violations & Fines

A first weed violation under § 90.18 carries a $50 to $500 fine per § 90.99(B), and every day past the 15-day abatement notice that the weeds stay uncut is a separate offense. A property the county classifies a chronic nuisance under § 90.05 faces $400-$1,000 per day instead, and the county can recover cutting costs as a lien on the property under 55 ILCS 5/5-1099.

Frequently Asked Questions

How tall can grass or weeds get before it's a violation in unincorporated Macon County?
On any lot in a subdivision, or a residential lot with a County Board special use permit, weeds and grass are capped at 12 inches under § 90.18(A). Noxious weeds designated under state law are banned outright, with no height allowance, anywhere in the county.
Does the weed limit apply to farmland?
The 12-inch cap in § 90.18(A) is tied to subdivision lots and special-use-permit residential lots, not open farmland generally. Ordinary agricultural fields outside those categories fall outside this particular cap, though the separate noxious weed ban in § 90.18(B) still applies countywide.
What happens if I don't cut my weeds after getting a notice?
The county can enter the property, cut the weeds itself, and bill the cost as a lien against the property under 55 ILCS 5/5-1099, on top of a $50-$500 fine per § 90.99(B) for each day the violation continues past the 15-day notice.

Sources & Official References

Other rules in Macon County

All Macon County rules

How Macon County compares: Cities with the Strictest Weed and Property Maintenance Rules·Compare Macon County to another location·View the Illinois landscaping rules overview

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