Mission
THE PRIMARY PURPOSE OF THE ORGANIZATION IS TO PROMOTE AND ADVANCE WEED SCIENCE ISSUES (CONTROL OF UNWANTED PLANT PESTS) IN THE STATE OF TENNESSEE.
Small Public Charity
TENNESSEE WEED SCIENCE SOCIETY
Based in Knoxville, TN, TENNESSEE WEED SCIENCE SOCIETY operates as a Small Public Charity. The organization reported $80K in revenue, $84K in expenses, $37K in total assets for fiscal year 2025.
EIN: 263299598
Knoxville, TN
Environmental Education
NTEE: C60
Latest filing: 2025
Total Revenue$80K
Total Expenses$84K
Total Assets$37K
Grant Records0
Filing Years2021–2025
Where $100 goes at Tennessee Weed Science Society
How Tennessee Weed Science Society divides every $100 it spends, from its own Form 990-EZ filings, averaged across 9 years.
$100
Programs
the work itself
<$1
Everything else
operations and overhead
Form 990-EZ reports program spending but doesn't separate management from fundraising, so those are shown together.
Inside the $100 for programs
$70
To support weed science efforts in the state of tennessee with respect to research, extension/outreach, and teaching functions
$15
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…
$15
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…
Source: Form 990-EZ filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.
Officers & Directors
DIRECTOR
Bob Hayes
DIRECTOR
Chris Main
SECRETARY
Larry Steckel
PRESIDENT
Tom Mueller
Officer compensation and complete director data available with membership.
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $80K | $84K | $37K |
| 2024 | $74K | $42K | $41K |
| 2023 | $34K | $42K | $8K |
| 2022 | $40K | $47K | $16K |
| 2021 | $57K | $50K | $22K |
Between 2021 and 2025, reported annual revenue grew from $57K to $80K (+41%), with total assets most recently reported at $37K.
Interactive year-over-year charts and full filing details available with membership.