Landscaping Rules in Knoxville, TN: What Residents Actually Need to Know

If you live in Knoxville or are thinking about moving there, landscaping rules are one of those things you probably won't think about until they affect you directly. Knoxville has 5 specific rules on the books covering different aspects of landscaping rules, and some of them might surprise you.

Tree Removal & Heritage Trees

Knoxville regulates tree removal on development sites through its zoning code. Private property trees generally do not require permits for removal outside of development projects.

Key details: Private Property: Generally no permit outside development. Development Sites: Tree plan may be required. City Trees: City approval needed for removal. Replanting: Encouraged when trees removed.

Development sites failing to preserve required trees face zoning violations. Unauthorized removal of city trees results in fines.

Tree Trimming

Knoxville property owners are responsible for maintaining trees on their property and keeping clearance over sidewalks and streets. The city manages public trees.

Key details: Sidewalk Clearance: 8 feet minimum. Street Clearance: 14 feet minimum. City Trees: Urban forestry program manages. Hazardous Trees: Must be addressed promptly.

Failure to maintain clearances results in code enforcement notices. The city may trim encroaching branches and bill the owner.

Grass Height Limits

Knoxville requires property owners to maintain yards and keep grass at a reasonable height. The city's property maintenance code addresses overgrown vegetation that creates nuisance conditions.

Key details: Height Limit: Approximately 12 inches. Enforcement: Code enforcement division. City Mowing: Charged to owner if non-compliant. Vacant Lots: Same standards apply.

Owners receive notice to mow. Non-compliance results in city-performed mowing charged to the owner plus administrative fees.

Water Restrictions

Knoxville does not typically impose mandatory outdoor watering restrictions. The Tennessee Valley region generally has adequate rainfall. Voluntary conservation is encouraged during dry periods.

Key details: Water Supply: Tennessee River / Fort Loudoun Lake. Restrictions: Not typical under normal conditions. Provider: Knoxville Utilities Board (KUB). Conservation: Voluntary programs encouraged.

Under normal conditions, no watering violations apply. During declared water emergencies, mandatory restrictions would carry penalties.

Knoxville is more permissive than most cities when it comes to water restrictions. That said, there are still limits.

Weed Ordinances

Knoxville enforces weed abatement under TN Code §6-54-113. Overgrown properties subject to city abatement at owner’s expense.

Key details: State Law: TN Code §6-54-113. Enforcement: City code compliance. Cost: Owner pays abatement. Growing Season: Year-round concern.

Notice to abate. City clears at owner’s expense ($200 to $1,000+). Administrative fee + property lien.

The Bottom Line

Knoxville's landscaping rules rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Knoxville is broadly strict or permissive.

These rules come from Knoxville's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.