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Nonprofit · EIN 91-0972555

WASHINGTON NATIVE PLANT SOCIETY

Tax-exempt · SEATTLE, WA 98115

Financials

$589K$497K2023$603K$636K2024
Revenue Expenses · by fiscal year end
Financials of WASHINGTON NATIVE PLANT SOCIETY by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2024990$603,232$635,926-$32,694$1,044,171$95,525$948,646
December 31, 2023990$589,272$496,815$92,457$965,272$26,087$939,185
Financial details: 990 for the year ended December 31, 2024

Revenue

Contributions, gifts and grants
$393,149
of which government grants
$14,869
Program service revenue
$115,632
Investment income
$28,307
Net income from sales of inventory
$66,144
Other revenue
$66,144

Expenses

Grants and similar amounts paid
$39,054
Compensation of officers, directors and key employees
$95,581
Other salaries and wages
$107,572
Salaries, compensation and benefits (total)
$225,845
Professional fundraising fees
$0
Accounting fees
$21,439
Occupancy
$12,007
Travel
$6,383
Program services (functional)
$457,451
Management and general (functional)
$137,420
Fundraising (functional)
$41,055

Balance sheet and other

Total assets, start of year
$965,272
Total assets, end of year
$1,044,171
Total liabilities, end of year
$95,525
Net assets, end of year
$948,646
Publicly traded securities
$429,204
Net assets without donor restrictions
$583,776
Net assets with donor restrictions
$364,870
Gross receipts
$641,833
Employees
5
Volunteers
274
Year formed
1976
State of legal domicile
WA

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended December 31, 2024, highest compensation first.

NameTitleHours / weekCompensation
Denise MahnkeExecutive Dir.
Officer
40$81,138
Gail SklarPresident
Trustee or director, Officer
7$0
Caisey LeighVice President
Trustee or director, Officer
5$0
Margaret TothTreasurer
Trustee or director, Officer
8$0
Ashley ShattuckSecretary
Trustee or director, Officer
5$0
Keyna BugnerPast President
Trustee or director
2$0
Tina MillerDirector
Trustee or director
2$0
Linda StormDirector
Trustee or director
2$0
Steven ClarkDirector
Trustee or director
2$0
Jarred GlennDirector
Trustee or director
2$0
Mike LeighDirector
Trustee or director
2$0
David OnstadDirector
Trustee or director
2$0
Geoff BergChapter Chair
Trustee or director
2$0
Kelsey KemelChapter Chair
Trustee or director
2$0
Eric WordenChapter Chair
Trustee or director
2$0
12 more people on this return
NameTitleHours / weekCompensation
Julie BecksteadChapter Chair
Trustee or director
2$0
Dana VisalliChapter Chair
Trustee or director
2$0
Fayla SchwartzChapter Chair
Trustee or director
2$0
Kristin KlocChapter Chair
Trustee or director
2$0
Bill EngleChapter Chair
Trustee or director
2$0
Dawn DockterChapter Chair
Trustee or director
2$0
Nate UlrichChapter Chair
Trustee or director
2$0
Ted AlwayChapter Chair
Trustee or director
2$0
Jim KlingEditorial Chair
Trustee or director
2$0
Janelle DownsEducation Chair
Trustee or director
2$0
Eirk ErtsgaardResearch Chair
Trustee or director
2$0
Scott MooreStewardsh Chair
Trustee or director
2$0
990 for the year ended December 31, 2023: 29 people
NameTitleHours / weekCompensationOther / benefits
Denise MahnkeExecutive Dir.
Officer
40$70,461$10,001
Mark TurnerDirector
Trustee or director
2$1,350$0
Gail SklarPresident
Trustee or director, Officer
7$0$0
Caisey LeighVice President
Trustee or director, Officer
5$0$0
Margaret TothTreasurer
Trustee or director, Officer
8$0$0
Ashley ShattuckSecretary
Trustee or director, Officer
5$0$0
Keyna BugnerPast President
Trustee or director
2$0$0
Kathy DarrowDirector
Trustee or director
2$0$0
Tina MillerDirector
Trustee or director
2$0$0
Jim KlingDirector
Trustee or director
2$0$0
Linda StormDirector
Trustee or director
2$0$0
Steven ClarkDirector
Trustee or director
2$0$0
Janka HobbsChapter Chair
Trustee or director
2$0$0
Cathy ReedChapter Chair
Trustee or director
2$0$0
Heather WendtChapter Chair
Trustee or director
2$0$0
Eric WordenChapter Chair
Trustee or director
2$0$0
Wendell KaneChapter Chair
Trustee or director
2$0$0
Dana VisalliChapter Chair
Trustee or director
2$0$0
Fayla SchwartzChapter Chair
Trustee or director
2$0$0
Margy MillerChapter Chair
Trustee or director
2$0$0
Annette KruzikChapter Chair
Trustee or director
2$0$0
Lisa AppelChapter Chair
Trustee or director
2$0$0
Joan FrazeeChapter Chair
Trustee or director
2$0$0
Becky ChaneyConservation Ch
Trustee or director
2$0$0
Janelle DownsEducation Chair
Trustee or director
2$0$0
Sarah HammanResearch Chair
Trustee or director
2$0$0
Walter FertigEditorial Chair
Trustee or director
2$0$0
Don SchaechtelFundraising Chr
Trustee or director
2$0$0
Van BobbittStewardship Chr
Trustee or director
2$0$0

Address and contacts

Address (IRS master file)
6310 NE 74TH ST STE 215E, SEATTLE, WA 98115-8171
Signed the 990
Margaret Toth, Treasurer
Phone
(206) 527-3210
Return prepared by
Bembridge & Associates LLC

Mission

To promote the appreciation and conservation of Washington's native plants and their habitats through study, education, and advocacy.

990 for the year ended December 31, 2024

Program accomplishments

  • Native Plant Public Education and Publications: WNPS provides a broad array of educational services to the public through its 12 chapters and 2,750 members statewide. Our online training offers a wide variety of subjects such as native pollinators, virtual plant walks, forest fire ecology, climate change, botanical drawing and many more. Study Weekend is a member event that focuses on botanical field trips, speakers, dinners and more. Each event is sponsored by a different chapter(s), allowing this event to be held in diversified areas throughout the state. Another popular event is Botany Washington, co-sponsored with the University of Washington Herbarium at the Burke Museum (WTU). Botany Washington provides botanists, ecologists, and other professionals with access to experts and an in-depth study of selected taxonomic groups.
    Expenses $189,957 · grants $2,000 · revenue $141,894
  • Youth Ecology Education Restoration (YEER): YEER started as a two-year pilot program in 2021, and was so successful was extended to school years 2023-25. It is an innovative educational program including stewards, teachers, students, and land managers to teach restoration in real life experiences for the students. In two primary components; a five-week unit where students take on the role of restoration ecologists and a field experience, where the students partner with restoration experts to implement restoration components typically over two days work on public land. PY 2024-2025 will serve 928 students, with 10 teachers and 19 stewards supporting the program. Students planted 1,303 native plants covering over 17,000 square feet of restoration area.
    Expenses $104,971 · revenue $69,111
  • Stewardship Training: WNPS educates community volunteers about our regions native plants and plant communities, and teaches how to use this knowledge to protect and restore Washingtons natural ecosystems. WNPS has committed over twenty years of steward training to conserve, protect and sustain the biodiversity of the native flora of Washington. Participants agree to return service hours at least equivalent to their training hours in efforts such as habitat restoration in forests and woodlands, shrub-steppe, prairies, riparian and wetlands. By using stewardship training to support our YEER program above, both programs benefit each other. Continuing education is also offered to Veteran Plant Stewards.
    Expenses $96,794 · revenue $50,525
  • Native Plant Grants Program: The standing committees of the Washington Native Plant Society award grants annually for conservation, education, and research. In 2024, they awarded $23,570 in grants. WNPS chapters contributed an additional grants of $15,234. And for the seventh year in a row, WNPS was a sponsor of University of Washingtons annual Botany Symposium. Customers for these grants include state agencies, other non-profit organizations, K-12 schools, grad students, and general member volunteers.
    Expenses $37,054 · grants $37,054
  • Native Plant Sales: WNPS hosts plant sales are held as online/in-person events at the chapter level for highly sought after native plants around the state. Customers like the at-home online shopping experience, along with knowing which plants are available. These sales provide extensive education of plant materials to home gardeners and landscapers utilizing native species in their landscapes. In 2024, the chapters have improved availability by propagation (and training) of some selections to increase availability. Any remaining plants not sold online are offered during the time of plant pickup. Three chapter plant sale stores were active in 2024, providing chapter revenue to support programs, and resources in the community to support native plant gardening. Hundreds of customers have obtained plants through this program.
    Expenses $16,403 · revenue $102,761
  • Other Program Expenses
    Expenses $12,272

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026Not on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
91-0972555
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1976
Accounting year ends
December
Files
Form 990 or 990-EZ
Category (NTEE)
Environment (C300)
Assets (IRS master file)
$1,044,171
Income (IRS master file)
$641,833

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2024$603,232$635,926$1,044,171XML
990December 2023$589,272$496,815$965,272XML
990December 2022$364,010$387,188$865,697IRS
990December 2021–––IRS
990December 2020–––IRS
990December 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 91-0972555).

Questions about WASHINGTON NATIVE PLANT SOCIETY

What is the EIN of WASHINGTON NATIVE PLANT SOCIETY?
The employer identification number (EIN) of WASHINGTON NATIVE PLANT SOCIETY is 91-0972555.
Is WASHINGTON NATIVE PLANT SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1976.
Are donations to WASHINGTON NATIVE PLANT SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does WASHINGTON NATIVE PLANT SOCIETY file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of WASHINGTON NATIVE PLANT SOCIETY due?
The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did WASHINGTON NATIVE PLANT SOCIETY last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended December 2024.
Who are the officers and directors of WASHINGTON NATIVE PLANT SOCIETY?
The 990 for the year ended December 31, 2024 lists 27 people; 1 received compensation from the organization, the highest $81,138 (Denise Mahnke, Executive Dir.).
How much revenue does WASHINGTON NATIVE PLANT SOCIETY have?
On its 990 for the year ended December 31, 2024 it reported revenue of $603,232, expenses of $635,926 and total assets of $1,044,171 at year end.

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