Weed control in Rock Hill operates at two levels. Locally, Neighborhood Services enforces the adopted International Property Maintenance Code (IPMC) requiring grass and weeds to be kept under approximately 12 inches, with abatement and lien authority. At the state level, the South Carolina Noxious Weed Act (Title 46, Chapter 23 β Β§46-23-10 et seq.) administered by Clemson University's Department of Plant Industry within the SC Crop Pest Commission declares listed noxious weeds a public nuisance subject to quarantine, eradication, and movement restrictions statewide.
Rock Hill's weed-control framework runs through Neighborhood Services and the adopted IPMC, with inspectors authorized to order abatement of vegetation exceeding approximately 12 inches on residential and commercial property. Authority flows from the Rock Hill Municipal Code (https://library.municode.com/sc/rock_hill) and South Carolina municipal home-rule authority. At the state level, the South Carolina Noxious Weed Act (Title 46, Chapter 23, Β§46-23-10 et seq., available at https://www.scstatehouse.gov/code/t46c023.php) declares listed noxious weeds, plant diseases, and plant pests a public nuisance. The Act is administered by Clemson University's Department of Plant Industry (DPI) within the South Carolina Crop Pest Commission, which is empowered to issue quarantines, eradication orders, and movement restrictions. The Act was substantially modernized in 2015 (Act No. 15, H.3323) to authorize the Commission to designate and regulate noxious weeds via regulation rather than statute. South Carolina noxious-weed regulations (S.C. Code Regs. Β§ 5-462) list specific regulated species and authorize Clemson DPI to enforce identification, certification, and eradication requirements primarily affecting nursery stock, seed, and agricultural commodities. Commercial pesticide application requires Clemson DPI applicator licensing under the SC Pesticide Control Act (Title 46, Chapter 13). The Clemson Cooperative Extension Service (clemson.edu/extension) publishes the Home & Garden Information Center (HGIC) guides for South Carolina invasive plants, noxious weeds, and integrated weed management adapted to the Piedmont climate that includes Rock Hill.
Failure to abate weeds after the IPMC notice of violation authorizes Rock Hill Neighborhood Services to advance to ticketing or municipal-court summons on the second calendar-year offense and to abate at the owner's expense with billing. Knowingly cultivating, selling, or distributing a state-listed noxious weed violates the SC Noxious Weed Act (Β§46-23-10+) and exposes the violator to Clemson DPI / SC Crop Pest Commission civil penalties, quarantine, and destruction orders separate from local code enforcement. Unlicensed commercial pesticide application violates the SC Pesticide Control Act (Title 46, Chapter 13) with Clemson DPI penalties.
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