Individual pages for every taxon listed by one or more U.S. state noxious weed programs, with habitat ontology and ethnobotanical use categories.
| State | Noxious Weed / Invasive Plant URL | Source / Agency | Invasive Pest / Species URL | Notes | Federal / USDA Backup URL |
|---|---|---|---|---|---|
| Alabama | https://agi.alabama.gov/plantprotection/resources/ | AL Dept. of Agriculture & Industries | https://agi.alabama.gov/plantprotection/wp-content/uploads/sites/12/2022/06/noxious-weeds.pdf | List references Federal Noxious Weed List as Class A; PDF of regulations available. | USDA Backup |
| Alaska | https://plants.alaska.gov/invasives/noxious-weeds.htm | AK Dept. of Natural Resources — Plant Materials Center | https://dnr.alaska.gov/ag/akpmc/invasives/pdf/noxious-weeds.pdf | PDF of Prohibited & Restricted Noxious Weeds available at DNR. | USDA Backup |
| Arizona | https://agriculture.az.gov/pestspest-control/agriculture-pests/noxious-weeds | AZ Dept. of Agriculture | https://azdot.gov/sites/default/files/2024-11/Official-2023-Arizona-Noxious-Weed-List.pdf | Classes A/B/C listed on main page; AZ DOT maintains 2023 official list PDF. | USDA Backup |
| Arkansas | https://agriculture.arkansas.gov/resources/about/boards-commissions/arkansas-state-plant-board/ | AR Dept. of Agriculture — State Plant Board | No standalone AR HTML list; USDA PLANTS is best online source. Regulations via AR SOS. | USDA Backup | |
| California | https://www.cdfa.ca.gov/plant/IPC/encycloweedia/weedinfo/winfo_table-sciname.html | CA Dept. of Food & Agriculture — Encycloweedia | https://www.cal-ipc.org/ | Encycloweedia is official CDFA noxious weed database with full data sheets. Cal-IPC list is advisory/non-regulatory. | USDA Backup |
| Colorado | https://ag.colorado.gov/conservation/noxious-weeds/colorado-noxious-weed-list | CO Dept. of Agriculture | https://ag.colorado.gov/conservation/noxious-weeds | Lists A, B, C, and Watch List on dedicated pages. | USDA Backup |
| Connecticut | https://portal.ct.gov/-/media/CAES/OAIS/Plant-Information/CT-Invasive-Plant-List.pdf | CT Dept. of Agriculture / CAES | https://cipwg.uconn.edu/invasive_plant_list/ | CT has a regulated invasive plant list (not a 'noxious weed' list). UConn CIPWG is advisory body. | USDA Backup |
| Delaware | https://agriculture.delaware.gov/plant-industries/noxious-weeds/ | DE Dept. of Agriculture | https://delawareinvasives.net/?page_id=68 | DE Invasive Species Council list is advisory. Statutory list in Delaware Code Title 3 Ch. 29. | USDA Backup |
| Florida | https://www.fdacs.gov/Agriculture-Industry/Pests-and-Diseases/Plant-Pests-and-Diseases/Noxious-Weeds | FL Dept. of Agriculture & Consumer Services | https://flrules.org/gateway/ruleno.asp?id=5B-57.007 | Admin Rule 5B-57.007 is the official noxious weed list. FDACS page links to photo gallery and full rule. | USDA Backup |
| Georgia | https://rules.sos.ga.gov/gac/40-12-4 | GA Secretary of State — Dept. of Agriculture Rule 40-12-4 | https://gainvasivespeciescouncil.org/list/ | GA noxious weed list is embedded in seed law rules; no standalone HTML list page. GAISC list is advisory. | USDA Backup |
| Hawaii | https://hdoa.hawaii.gov/wp-content/uploads/2012/12/Chapter-68.pdf | HI Dept. of Agriculture — HAR Chapter 68 | https://dlnr.hawaii.gov/hisc/info/policy/ | HAR Ch. 68 PDF is official noxious weed list (79 species). HISC policy page linked. | USDA Backup |
| Idaho | https://invasivespecies.idaho.gov/noxious-weed-program | ID State Dept. of Agriculture — Invasive Species of Idaho | https://invasivespecies.idaho.gov/terrestrial-plants | Full 2024 weed list PDF: https://agri.idaho.gov/wp-content/uploads/Rulemaking/ISDA-2024-weed-List.pdf | USDA Backup |
| Illinois | https://www.ilga.gov/commission/jcar/admincode/008/00800220sections.html | IL General Assembly — JCAR Part 220 Noxious Weed Law | https://extension.illinois.edu/invasives/regulations | Actual list is in administrative code. No standalone IDOA list page found. | USDA Backup |
| Indiana | https://www.in.gov/dnr/rules-and-regulations/invasive-species/terrestrial-invasive-species-plants/ | IN Dept. of Natural Resources | https://www.in.gov/dnr/rules-and-regulations/invasive-species/ | Indiana uses invasive pest law (312 IAC 18-3-25), not a traditional noxious weed law. 44 terrestrial invasive species regulated. | USDA Backup |
| Iowa | https://iowaagriculture.gov/entomology-plant-science-bureau/plants | IA Dept. of Agriculture & Land Stewardship | https://www.legis.iowa.gov/docs/iac/chapter/03-05-2025.21.58.pdf | Statutory list in Iowa Code Ch. 317; admin rules in IAC Ch. 58. 31 species declared noxious. | USDA Backup |
| Kansas | https://www.agriculture.ks.gov/divisions-programs/plant-protection-weed-control/noxious-weed-control-program/kansas-noxious-weed-list | KS Dept. of Agriculture | https://www.agriculture.ks.gov/divisions-programs/plant-protection-weed-control/noxious-weed-control-program | 12 state-designated noxious weed species. | USDA Backup |
| Kentucky | https://www.se-eppc.org/ky/list.htm | KY Exotic Pest Plant Council (advisory — no official KDA page) | https://eec.ky.gov/Natural-Resources/Forestry/forest-health/Pages/Invasive-Plant-Threats.aspx | Kentucky has no standalone KDA noxious weed list webpage. State statute 176.051 governs highway ROW. USDA PLANTS is best official source. | USDA Backup |
| Louisiana | https://www.ldaf.state.la.us/faqs/which-weeds-are-considered-to-be-noxious-in-louisiana/ | LA Dept. of Agriculture & Forestry | https://www.ldaf.la.gov/plants/seeds/seed-regulations | Noxious weed seed list PDF also available from LDAF. | USDA Backup |
| Maine | https://www.maine.gov/dacf/php/horticulture/invasiveplants.shtml | ME Dept. of Agriculture, Conservation & Forestry | https://www.maine.gov/dacf/mnap/features/invasive_plants/invasives.htm | 'Do Not Sell' list (33 + 30 new species added 2024). ME Natural Areas Program also at same domain. | USDA Backup |
| Maryland | https://mda.maryland.gov/plants-pests/Pages/noxious_weeds_in_md.aspx | MD Dept. of Agriculture | https://mda.maryland.gov/plants-pests/Documents/List_target_spp_for_assessment_27Feb2023.pdf | Main noxious weed info page; ID brochures and county programs linked. Invasive plant assessment list in PDF. | USDA Backup |
| Massachusetts | https://www.mass.gov/info-details/massachusetts-prohibited-plant-list | MA Dept. of Agricultural Resources | https://www.mass.gov/info-details/invasive-plants | ~145 species on Prohibited Plant List. | USDA Backup |
| Michigan | https://www.michigan.gov/mdard/plant-pest/plant-health/nursery-licensing-and-inspection/prohibited-and-restricted-weeds | MI Dept. of Agriculture & Rural Development | https://www.michigan.gov/invasives/id-report/plants | MDARD Prohibited/Restricted Weeds page. DNR invasive species plant page separate. | USDA Backup |
| Minnesota | https://www.mda.state.mn.us/minnesota-noxious-weed-list | MN Dept. of Agriculture | https://www.mda.state.mn.us/plants-insects/noxious-invasive-weeds | Updated January 2026; next update January 2029. Five regulatory categories. | USDA Backup |
| Mississippi | https://www.mdac.ms.gov/bureaus-departments/bpi/plant-pest-programs/noxious-weeds/ | MS Dept. of Agriculture & Commerce | https://extension.msstate.edu/natural-resources/water-weeds/federal-and-state-listed-noxious-weeds | 9 regulated species. MSU Extension supplements with federal/state noxious weed info. | USDA Backup |
| Missouri | https://agriculture.mo.gov/plants/pests/noxiousweedlist.php | MO Dept. of Agriculture | https://agriculture.mo.gov/plants/pests/noxiousweeds.php | 12 designated noxious weed species. | USDA Backup |
| Montana | https://agr.mt.gov/Noxious-Weeds | MT Dept. of Agriculture | https://agr.mt.gov/_docs/weeds-docs/2019-Montana-Noxious-Weed-List.pdf | Main program page + current list PDF. 36 state-listed noxious weeds. | USDA Backup |
| Nebraska | https://nda.nebraska.gov/plant/noxious_weeds | NE Dept. of Agriculture | https://nda.nebraska.gov/plant/noxious_weeds/regulations | Regulations and county-declared weed lists also available from same domain. | USDA Backup |
| Nevada | https://agri.nv.gov/plant/noxious_weeds/noxious_weed_list/ | NV Dept. of Agriculture | https://agri.nv.gov/noxiousweeds/ | Categories A, B, C. Updated November 2023. | USDA Backup |
| New Hampshire | https://www.agriculture.nh.gov/farms-businesses/plant-industry/invasive-plants | NH Dept. of Agriculture, Markets & Food | https://www.nhdfl.dncr.nh.gov/sites/g/files/ehbemt866/files/documents/nh-invasive-plant-list.pdf | NH uses regulated invasive plant list, not a 'noxious weed' list. Comprehensive invasive plant list PDF at DNCR. | USDA Backup |
| New Jersey | https://www.nj.gov/agriculture/divisions/pi/prog/noxious.html | NJ Dept. of Agriculture | https://dep.nj.gov/invasive-species/plants/ | NJ does not classify noxious weeds by statute but has seed noxious weed regulations. NJDEP maintains invasive plant list. | USDA Backup |
| New Mexico | https://nmdeptag.nmsu.edu/apr/noxious-weeds.html | NM Dept. of Agriculture (hosted at NMSU) | https://www.emnrd.nm.gov/sfd/forest-health/invasive-noxious-plants/ | 41 species; updated July 2020. Full list memo PDF: https://nmdeptag.nmsu.edu/media/pdf/noxious-weed-memo-and-list-june-2020.pdf | USDA Backup |
| New York | https://agriculture.ny.gov/plant-industry/invasive-species | NY Dept. of Agriculture & Markets | https://dec.ny.gov/nature/invasive-species/resources-regulations/regulations | 69 prohibited + 6 regulated invasive plant species. DEC also regulates invasive species. | USDA Backup |
| North Carolina | https://www.ncagr.gov/plant-industry-noxious-weeds-list | NC Dept. of Agriculture & Consumer Services | https://www.ncagr.gov/divisions/plant-industry/plant-protection/plant-industry-weed-regulatory-services | Also regulates all federal noxious weeds by extension. | USDA Backup |
| North Dakota | https://www.ndda.nd.gov/divisions/plant-industries/noxious-weeds | ND Dept. of Agriculture | https://www.invasivespeciesinfo.gov/us/north-dakota | 12 state noxious weed species. Palmer amaranth and houndstongue recently added. | USDA Backup |
| Ohio | https://agri.ohio.gov/wps/portal/gov/oda/divisions/legal-office/legal-documents-folder/biaplanthealthnoxiousweedrule | OH Dept. of Agriculture | https://agri.ohio.gov/divisions/plant-health/invasive-pests/invasive-insects/slf | Noxious weed rule document (updated 2024). No simple list HTML page; rule PDF is the official source. | USDA Backup |
| Oklahoma | https://ag.ok.gov/plant-industry/ | OK Dept. of Agriculture, Food & Forestry | https://ag.ok.gov/wp-content/uploads/2020/11/Oklahoma-Noxious-Weed-Law.pdf | 3 species designated (Musk, Scotch, Canada thistles). Admin Code: https://regulations.justia.com/states/oklahoma/title-35/chapter-30/subchapter-25/section-35-30-25-3/ | USDA Backup |
| Oregon | https://www.oregon.gov/oda/weeds/oregon-noxious-weeds/pages/law.aspx | OR Dept. of Agriculture / OR State Weed Board | https://www.oregon.gov/oda/weeds/pages/default.aspx | 2024 policy PDF: https://www.oregon.gov/oda/weeds/oregon-noxious-weeds/Documents/NoxiousWeedPolicyClassification.pdf | USDA Backup |
| Pennsylvania | https://www.agriculture.pa.gov/Plants_Land_Water/PlantIndustry/NIPPP/Pages/Controlled-Plant-Noxious-Weed.aspx | PA Dept. of Agriculture | https://www.agriculture.pa.gov/Plants_Land_Water/PlantIndustry/GISC/Documents/PISC%20Full%20Plant%20Priority%20List.pdf | Controlled Plant & Noxious Weed Lists page. Classes A, B, C. PISC invasive plant priority list PDF available. | USDA Backup |
| Rhode Island | https://dem.ri.gov/ri-stormwater-solutions/in-the-weeds/invasive-species.php | RI Dept. of Environmental Management (advisory) | https://www.crmc.ri.gov/invasives/RINHS_Invasives_2020.pdf | RI is the only New England state without a complete statutory noxious plant list. DEM page and RINHS 2020 list are advisory/non-regulatory. | USDA Backup |
| South Carolina | https://www.clemson.edu/public//regulatory/plant-industry/plant-pest-regulations/state-plant-pest-information/pests_list.html | Clemson Univ. Regulatory Services (acts as state regulator) | https://www.clemson.edu/public/regulatory/plant-industry/invasive/ | Clemson Regulatory Services administers SC plant pest law. No agriculture.sc.gov list page found. | USDA Backup |
| South Dakota | https://sdda.sd.gov/ag-services/weed-and-pest-control/weed-pest-control/sd-state-noxious-weed-declared-pest-list-and-distribution-maps/default.aspx | SD Dept. of Agriculture & Natural Resources (DANR) | https://danr.sd.gov/Conservation/PlantIndustry/WeedPest/docs/noxiousweeds.pdf | Agency merged into DANR. Some URLs still resolve via sdda.sd.gov. PDF noxious weed list also available. | USDA Backup |
| Tennessee | https://www.tn.gov/agriculture/businesses/plants/plant-pests-and-quarantines/pest-plants.html | TN Dept. of Agriculture | https://www.tn.gov/agriculture/businesses/plants/invasive.html | 13 regulated pest plant species. TN-IPC advisory list (non-regulatory): https://www.tnipc.org/invasive-plants/ | USDA Backup |
| Texas | https://texasagriculture.gov/Regulatory-Programs/Plant-Quality/Noxious-and-Invasive-Plants | TX Dept. of Agriculture | https://www.tiscc.texas.gov/?page_id=105 | TX Invasive Species Coordinating Committee has official species lists. | USDA Backup |
| Utah | https://ag.utah.gov/plant-industry/noxious-weed-control-resources/state-of-utah-noxious-weed-list/ | UT Dept. of Agriculture & Food | https://ag.utah.gov/plant-industry/noxious-weed/ | 54 listed species; 5 classes (1A Watch, 1B EDRR, 2 Control, 3 Containment, 4 Prohibited for sale). | USDA Backup |
| Vermont | https://agriculture.vermont.gov/public-health-agricultural-resource-management-division/plant-health-and-pest-management/plant-0 | VT Agency of Agriculture, Food & Markets | https://agriculture.vermont.gov/vermont-invasive-and-exotic-plant-advisory-committee | Designated Noxious Weeds page. VIEPAC advisory committee page also at agriculture.vermont.gov. | USDA Backup |
| Virginia | https://www.vdacs.virginia.gov/plant-industry-services-noxious-weeds.shtml | VA Dept. of Agriculture & Consumer Services | https://www.dcr.virginia.gov/natural-heritage/invsppdflist | DCR Division of Natural Heritage maintains a separate invasive plant species list (90 species). | USDA Backup |
| Washington | https://www.nwcb.wa.gov/printable-noxious-weed-list | WA State Noxious Weed Control Board | https://agr.wa.gov/departments/insects-pests-and-weeds/weeds | NWCB is the statutory authority for WA's noxious weed list. 2025 list PDF: https://www.nwcb.wa.gov/pdfs/2025-State-Weed-List_Scientific_Name-8.5x11.pdf | USDA Backup |
| West Virginia | https://agriculture.wv.gov/divisions/plant-industries/ | WV Dept. of Agriculture — Plant Industries Division | https://apps.sos.wv.gov/adlaw/csr/readfile.aspx?DocId=1216&Format=PDF | No standalone HTML noxious weed list page. Official Rules PDF at WV SOS. WV adopts federal list + Multiflora rose, Japanese barberry. | USDA Backup |
| Wisconsin | https://dnr.wisconsin.gov/topic/Invasives/RegulatedSpecies | WI Dept. of Natural Resources | https://dnr.wisconsin.gov/sites/default/files/topic/Invasives/NR40plantlist.pdf | WI uses DNR Admin Code NR 40 (not a traditional noxious weed law). NR 40 plant list PDF updated March 2026. | USDA Backup |
| Wyoming | https://agriculture.wy.gov/weed-pest | WY Dept. of Agriculture | https://wyoweed.org/identify-weeds/ | WY Weed & Pest Council provides ID resources. Weed law/list in Ch. 63: https://wyoleg.gov/InterimCommittee/2016/SSD-0708APPENDIXG.pdf | USDA Backup |
| USDA PLANTS — State Noxious Weed Lists (all states) | https://plants.usda.gov/java/noxiousDriver | USDA PLANTS Database | Select any state to view USDA-compiled noxious weed list. Best fallback for states with no official HTML page. | ||
| All Taxa Index of U.S. Noxious Weeds: A Digital Holotype | https://www.aphis.usda.gov/sites/default/files/weedlist.pdf | USDA APHIS | Federal list PDF. Most states also regulate all plants on this list. | ||
| National Invasive Species Info Center — State Pages | https://www.invasivespeciesinfo.gov/unitedstates/state.shtml | USDA National Invasive Species Information Center | Each state has a dedicated invasive species landing page. | ||
| USDA AMS — State Noxious-Weed Seed Requirements | https://www.ams.usda.gov/sites/default/files/media/StateNoxiousWeedsSeedList.pdf | USDA AMS (January 2024) | Seed law compliance noxious weed requirements by state. Updated January 2024. |