Skip to the page content
Your donations
Passes our checks

Tennessee Weed Science Society

EIN 26-3299598 · Knoxville, TN

Public records show a registered, tax-exempt organization in good standing.

LegitimacyPassesRegistration and standingFinancial healthFair63 out of 100GovernanceNot ratedThe short tax form does not cover thisImpact evidenceDescribes programsHow well its results are evidenced

What it says it does

THE PRIMARY PURPOSE OF THE ORGANIZATION IS TO PROMOTE AND ADVANCE WEED SCIENCE ISSUES (CONTROL OF UNWANTED PLANT PESTS) IN THE STATE OF TENNESSEE.

Income
$79,950
Spending
$84,010
Reserves
5.2 months of spending
Largest source of income
donations and private grants, 100%

Source: Form 990EZ for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

Fair: 63 out of 100. Higher than 24% of charities in its peer group (environment, under $250k).

  • Reserves

    20 of 35

    Spendable reserves would cover 5.2 months of spending.

  • Debt

    20 of 20

    It owes 0% of what it owns.

  • Living within its means

    4 of 15

    Spending exceeded income by 5% of income.

Source: Form 990EZ for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

This organization files the short tax form, which does not ask about boards, policies or audits. That is normal for a small charity and is not a mark against it.

Source: Form 990EZ for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Impact evidence

Describes programs. Its tax return describes what it does but we have found no measurable results in it.

Programs described in its return (3)
  1. $68,816 spent. TO SUPPORT WEED SCIENCE EFFORTS IN THE STATE OF TENNESSEE WITH RESPECT TO RESEARCH, EXTENSION/OUTREACH, AND TEACHING FUNCTIONS. THIS INCLUDES PURCHASE OF EQUIPMENT THAT ENABLES WEED SCIENCE FACULTY AND STAFF TO CONDUCT RESEARCH MORE EFFECTIVELY AND EXAMINE THE ENVIRONMENTAL FATE OF HERBICIDES UNDER FIELD CONDITIONS AS TO FINAL PATHWAYS IN AIR, WATER, AND SOIL.
  2. A MAJOR INITIATIVE OF THE TNWSS IS AN EDUCATIONAL SHORT COURSE HELD PERIODICALLY, WHICH BRINGS IN NATIONALLY KNOWN SPEAKERS TO LECTURE ON WEED SCIENCE TOPICS, INCLUDING HERBICIDE MODE OF ACTION AND WEED RESISTANCE TO THOSE HERBICIDES. THE SECOND COURSE WAS HELD IN 2017 AND APPROXIMATELY 26 INDIVIDUALS ATTENDED THE COURSE. THE THIRD EVENT WAS HELD IN 2019 WITH APPROXIMATELY 27 INDIVIDUALS IN ATTENDANCE. THE 2021 EVENT WAS POSTPONED DUE TO THE COVID PANDEMIC.
  3. $15,194 spent. GRADUATE STUDENT TRAINING IS A CORE MISSION OF TNWSS, AND SEVERAL ACTIVITIES WERE HELD OVER THE COURSE OF THE YEAR TO HELP RECRUIT, TRAIN, AND ENHANCE THE EXPERIENCE OF WEED SCIENCE STUDENTS IN THE STATE OF TENNESSEE AND THE SOUTHERN REGION.

Source: Form 990EZ for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Legitimacy checks

  1. Is it registered with the IRS? Passed.

    Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  2. Has the IRS revoked its tax-exempt status? Worth knowing.

    Status was revoked on May 15, 2012 for not filing returns for three years, and reinstated on May 15, 2012.

    Source: Automatic revocation of exemption list, Internal Revenue Service, file dated September 30, 2026.

  3. Are donations tax-deductible? Passed.

    On the IRS list of organizations eligible to receive tax-deductible contributions.

    Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated September 10, 2026.

  4. Is it keeping up with its IRS filings? Passed.

    Most recent return on file covers the year ending December 2025.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  5. How long has it been tax-exempt? Passed.

    Recognized by the IRS since May 2014.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  6. Is it in good standing with state regulators? Passed.

    Not on California's list of charities barred from soliciting. Other states are not yet checked.

    Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated October 7, 2026.

Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.