Evanston, IL Invasive Plant Rules: Prohibited Species (2026)
Key Facts
- Defined in
- City Tree Canopy Preservation Policy
- Group D removal DBH
- Over 6 inches (private)
- Mitigation requirement
- Encouraged, not mandatory
- Permit still required
- Yes, tree preservation permit
- Penalty if unpermitted
- $100–$1,500 per violation
Summary
Evanston's tree code singles out exotic and invasive species for lighter treatment: a Group D or otherwise invasive tree over 6 inches DBH on private property can be removed with just a tree preservation permit, and replacement mitigation is only encouraged, not required.
Dead, extremely hazardous, imminently dying, Group D, or other invasive trees with a DBH greater than six (6) inches may be removed with a tree preservation permit, and mitigation is encouraged.5.Trees on private property with a DBH of less than six (6) inches may be removed, and mitigation is encouraged. (Ord. No. 5-O-11, § 1, 3-28-2011; Ord. No. 8-O-12, (50-O-11(exh. B, § 7-8-8-6)), 1-23-2012; Ord. No. 15-O-19, § 12, 3-11-2019; Ord. No. 15-O-23, § 4, 9-11-2023)
Editor's note— Ord. No. 15-O-23, § 4, adopted September 11, 2023. changed the title of Section 7-8-8-6 from "Permit requirements" to "Permit application and review requirements." The historical notation has been preserved for reference purposes.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 21).
Full Breakdown
Section 7-8-8-3 defines "exotic and invasive species" as vegetation that interferes with tree health, as listed under Species Group D in the City's Tree Canopy Preservation Policy. Removing invasive species of 2 or more inches DBH on public property, or 6 or more inches on private property, is a "regulated activity" under Section 7-8-8-5 requiring City Manager review. But Section 7-8-8-6(D)(4) exempts dead, hazardous, or invasive/Group D trees over 6 inches DBH from the standard mandatory replacement rate that applies to healthier species.
Violations & Fines
Removing an invasive or Group D tree without first obtaining the required tree preservation permit is punishable under the Chapter's general penalty of $100 to $1,500 per violation, per day, under Section 7-8-8-12.
Frequently Asked Questions
Do I need City approval to remove an invasive tree species in Evanston?
How does Evanston define an invasive tree species?
Sources & Official References
Other rules in Evanston
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Prohibited Species in Nearby Cities
How other cities in Cook County handle prohibited species.