Chattanooga, TN Landscaping Rules: Native Plants (2026)
Key Facts
- General height limit
- 10 inches, grass/weeds/underbrush
- Exemption program
- RainSmart Yards / RainSmart Rewards
- Exemption condition
- Must meet program maintenance requirements
- Enforcement
- City abates and bills owner, Sec. 21-137
- Emergency exception
- No citation during declared disaster
Summary
Chattanooga generally requires grass and weeds kept under 10 inches, but Sec. 21-136(d) exempts City approved RainSmart Yards and projects approved through the RainSmart Rewards program that adhere to the program's maintenance requirements, giving certified native-plant and rain-garden landscaping a path around the standard overgrowth ordinance.
(a)All Premises and exterior property shall be maintained free from grass, weeds or underbrush in excess of ten (10) inches. All noxious weeds shall be prohibited. Bushes, shrubs, vines, groundcover and decorative landscaping shall be properly maintained. (d)City approved RainSmart Yards and projects approved through the RainSmart Rewards program that adhere to the program's maintenance requirements shall be exempt from the provisions of this ordinance.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 40 Update 1).
Full Breakdown
Sec. 21-136(a), the City's overgrowth standard, requires that all Premises and exterior property shall be maintained free from grass, weeds or underbrush in excess of ten (10) inches, bans noxious weeds outright, and requires that bushes, shrubs, vines, groundcover and decorative landscaping shall be properly maintained. A violation is prosecutable, and under Sec. 21-136(b) the City can send its own crew or a hired contractor onto the property to cut and remove the overgrowth, then bill the owner for the cost plus administrative fees.
Sec. 21-136(d) then carves out the exemption relevant to native and managed-natural landscaping: City approved RainSmart Yards and projects approved through the RainSmart Rewards program that adhere to the program's maintenance requirements shall be exempt from the provisions of this ordinance. That means a property owner who enrolls a yard in the City's RainSmart Rewards program and keeps it within that program's own maintenance standards does not have to keep the planted area under the 10-inch height limit, a meaningful allowance for native meadow plantings, pollinator gardens and stormwater-absorbing rain gardens that are meant to grow taller and denser than turf grass.
Sec. 21-136(c) adds a separate, unrelated exemption: the City cannot issue an overgrowth citation during a Mayor-declared natural disaster emergency in the affected location. Enforcement otherwise runs through the Code Official under Sec. 21-137, which requires written notice, a chance to remedy the violation, and a right to a hearing in City Court before the City abates the overgrowth and assesses the cost as a lien against the property.
Violations & Fines
Growing regular grass, weeds or underbrush over 10 inches without RainSmart Yards or RainSmart Rewards approval is prosecutable under Sec. 21-136(b), and the City can enter the property to cut the growth and bill the owner for the cost plus administrative fees. Sec. 21-137 requires the Code Official to give written notice and a chance to remedy the violation, with abatement costs becoming a lien on the property if the owner does not comply within ten days.
Frequently Asked Questions
Can I let native plants grow taller than 10 inches in Chattanooga?
What happens if my yard exceeds the height limit without RainSmart approval?
Does the noxious weed ban apply even in a RainSmart yard?
Sources & Official References
Other rules in Chattanooga
Compare Chattanooga to another location·View the Tennessee landscaping rules overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.