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What is the Regulated Weeds Database?

The Regulated Weeds Database is a comprehensive resource that tracks and displays information about regulated weed species across different U.S. states. Our goal is to provide researchers, agricultural professionals, and the public with easy access to information about which weeds are regulated in different states.

This project compiles data from state agricultural authorities to create an interactive map and searchable database of regulated weed species.

Data Sources

Our database is compiled from official state regulatory lists and is regularly updated to reflect the latest regulations. The data includes:

  • Common and scientific names of regulated weed species
  • State-by-state regulation status
  • Distribution information across states

Method

To comprehensively identify regulated weed species across the United States, we conducted systematic research using authoritative and reliable sources. Our approach included the following steps:

  • Data Collection from Authoritative Sources:
    We reviewed and extracted information from government websites (e.g., state departments of agriculture, environmental protection, and natural resources), academic institutions (e.g., university extension programs specializing in invasive and noxious weeds), and reputable non-governmental organizations (NGOs) focused on plant conservation and invasive species management.
  • Compilation of State-Specific Lists:
    For each state, we compiled a list of regulated weed species, ensuring that our data captured variations in regulatory definitions (e.g., noxious weeds, invasive plants) and species classifications unique to each jurisdiction.
  • Comparison with the Federal List:
    The compiled state-specific lists were systematically compared with the federal noxious weed list published by the United States Department of Agriculture (USDA). This allowed us to identify discrepancies, overlaps, and gaps between state and federal regulations.
  • Verification and Cross-Referencing:
    We cross-referenced the findings to ensure accuracy and consistency. This included validating species names and classifications to account for synonyms and taxonomic updates.
  • This method ensured a comprehensive and accurate assessment of regulated weed species, providing insights into the alignment and divergence of weed management policies across state and federal jurisdictions in the United States.

    Alabama
    Alabama Department of Agriculture and Industries last updated 2000
    Alaska
    Alaska Department of Natural Resources last updated 2013
    Arizona
    Arizona Department of Agriculture last updated 2024
    Arkansas
    Arkansas Department of Agriculture last updated 2024
    California
    California Department of Food and Agriculture last updated 2021
    Colorado
    Colorado Department of Agriculture last updated 2023
    Connecticut
    Connecticut Invasive Plant Working Group last updated 2004
    Delaware
    Delaware Department of Agriculture last updated 2012
    District of Columbia
    USDA last updated 2024
    Florida
    Florida Department of State last updated 2024
    Georgia
    USDA last updated 2024
    Hawaii
    Hawaii Department of Agriculture last updated 1992
    Idaho
    Idaho Invasive Species Council last updated 2009
    Illinois
    University of Illinois Extension last updated 2022
    Indiana
    Indiana Department of Natural Resources last updated 2019
    Iowa
    Iowa State University Extension and Outreach last updated 2017
    Kansas
    Kansas Department of Agriculture last updated 2023
    Kentucky
    Kentucky Transportation Cabinet last updated 2023
    Louisiana
    Louisiana Department of Agriculture and Forestry last updated 2022
    Maine
    Maine Department of Agriculture, Conservation and Forestry last updated 2024
    Maryland
    Maryland Department of Agriculture last updated 2020
    Massachusetts
    Massachusetts Department of Agricultural Resources last updated 2023
    Michigan
    Michigan Department of Agriculture and Rural Development last updated 1994
    Minnesota
    Minnesota Department of Agriculture last updated 2023
    Mississippi
    Mississippi Department of Agriculture and Commerce last updated 2006
    Missouri
    Missouri Department of Agriculture last updated 2024
    Montana
    Montana Department of Agriculture last updated 2019
    Nebraska
    Nebraska Department of Agriculture last updated 2012
    Nevada
    Nevada Department of Agriculture last updated 2021
    New Hampshire
    New Hampshire Department of Agriculture, Markets & Food last updated 2023
    New Jersey
    New Jersey Department of Agriculture last updated 2004
    New Mexico
    New Mexico Department of Agriculture last updated 2020
    New York
    New York State Department of Environmental Conservation last updated 2015
    North Carolina
    North Carolina Department of Agriculture and Consumer Services last updated 2010
    North Dakota
    North Dakota Department of Agriculture last updated 2021
    Ohio
    Ohio Department of Agriculture last updated 2018
    Oklahoma
    Oklahoma Department of Agriculture, Food, and Forestry last updated 2000
    Oregon
    Oregon Department of Agriculture last updated 2020
    Pennsylvania
    Pennsylvania Department of Agriculture last updated 2024
    Rhode Island
    USDA last updated 2014
    South Carolina
    Clemson University Plant Industry Division last updated 2024
    South Dakota
    South Dakota Department of Agriculture and Natural Resources last updated 2020
    Tennessee
    Tennessee Department of Agriculture last updated 2009
    Texas
    Texas Secretary of State last updated 2013
    Utah
    Utah Department of Agriculture and Food last updated 2022
    Vermont
    Vermont Agency of Agriculture, Food and Markets last updated 2010
    Virginia
    Virginia Department of Agriculture and Consumer Services last updated 2024
    Washington
    Washington State Noxious Weed Control Board last updated 2023
    West Virginia
    West Virginia Department of Agriculture last updated 2024
    Wisconsin
    Wisconsin Department of Natural Resources last updated 2015
    Wyoming
    Wyoming Weed and Pest Council last updated 2011

    Contact

    For questions, suggestions, or corrections, please contact us at: contact@example.com