Flint, MI Invasive Plant Rules: Prohibited Species (2026)
Key Facts
- Species named
- 10, plus administrator catch-all
- Includes
- Canada thistle, poison ivy, ragweed
- Enforced with
- § 39-43 height nuisance rule
- Fine
- Up to $200.00 civil infraction
Summary
Flint's code names ten specific noxious weed species, from Canada thistle to poison sumac, plus a catch-all for any plant the City Administrator deems a nuisance.
NOXIOUS WEEDS. Canada thistle (Circium arvensis), dodders (any species of Cuscuta), mustards (Charlock, black mustard and Indian mustard, species of Brassica or Sinapis), wild carrot (Caucus carota), bindweed (Convolvulus arvensis), perennial sowthistle (sonchus arvensis), hoary alyssum (Berteroa incana), ragweed (Ambrosia elatior l.) and poison ivy (Rhus toxicodendron), poison sumac (Toxicodendron vernix) or any other plant which in the opinion of the City Administrator is regarded as a common nuisance.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2016 Code: Local legislation current through Ordinance 3821, passed 3-1-2012).
Full Breakdown
The City of Flint defines NOXIOUS WEEDS by name in Chapter 39, Article IV: Canada thistle, dodders, three types of mustard, wild carrot, bindweed, perennial sowthistle, hoary alyssum, ragweed, poison ivy and poison sumac. The City Administrator can add any other plant found to be a common nuisance. This list feeds directly into the § 39-43 height-based nuisance rule for weeds and grass on improved lots.
Violations & Fines
Growth of a listed species (or anything the City Administrator designates) triggers the nuisance procedure under §§ 39-43 through 39-44; a civil infraction fine up to $200.00 follows under § 39-43.1.A.
Frequently Asked Questions
Is poison ivy a regulated species in Flint?
Can the City add species not on the list?
Sources & Official References
Other rules in Flint
Compare Flint to another location·View the Michigan invasive plant rules overview
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