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TRANSITION ZONE HORTICULTURAL INSTITUTE INC

EIN 94-2788812 FLAGSTAFF, AZ

Revenue 2024
$937,704
Expenses 2024
$732,487

Program services were 64.4% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
C40
Classification
1000
Street
4001 S WOODY MOUNTAIN RD

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2024

Mission

To increase the appreciation, understanding, and conservation of plants and plant communities native to the Colorado Plateau.

  • Public Botanical Gardens - Our primary goal is the preservation and exhibit of live plants of the Colorado Plateau and adaptive species so that visitors whoexperience our gardensor attend our community events, gain an understanding of horticulture and conservation principles and techniques as well as exposure to native plants, wildlife and ecology in an outdoor environment.

    Expenses $188,765 · Revenue $194,739

  • Conservation of Native Plants - Our horticulture and conservation departments work to preserve native plants at riskby providing native plant and ecological information, conductingrestoration and citizens science projects, on site display garden development and interpretation, and in-house plant propagation and community plant sales.

    Expenses $188,765 · Revenue $194,739

  • Environmental Education - our onsite education programs for children include school field trips. in-class programing, and summer camps For adults, our programs include docent training courses, guided nature walks, seminars, lectures, and hands-on workshops.

    Expenses $94,383 · Revenue $51,483

As filed on the 2024 return.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Nathaniel O'Meara

    Executive Director

    Total calculated
    $83,438
    From this org
    $83,438
    From related orgs
    $0
    Other
    $0
    Hours/week
    50

  • Dennis Kruse

    President

    Total calculated
    $0
    Hours/week
    1.25

  • Lexi Fojtik

    Vice President

    Total calculated
    $0
    Hours/week
    0.5

  • Ellen Wade

    Secretary

    Total calculated
    $0
    Hours/week
    1.25

  • Kristine Bellmore

    Treasurer

    Total calculated
    $0
    Hours/week
    1.25

  • Rosemary Lamberson

    Trusteee

    Total calculated
    $0
    Hours/week
    0.5

  • Megen Dreher

    Trustee

    Total calculated
    $0
    Hours/week
    0.5

  • James Allen

    Trustee

    Total calculated
    $0
    Hours/week
    0.5

  • Brian Webb

    Trustee

    Total calculated
    $0
    Hours/week
    0.5

  • Loni Shapiro

    Trustee

    Total calculated
    $0
    Hours/week
    0.5

  • Austin Leggett

    Trustee

    Total calculated
    $0
    Hours/week
    0.5

  • Celia Holm

    Trustee

    Total calculated
    $0
    Hours/week
    0.5

  • Robyn Cass

    Trustee

    Total calculated
    $0
    Hours/week
    0.5

  • Shandiin Tallman

    Trustee

    Total calculated
    $0
    Hours/week
    0.5

  • David Grede

    Trustee

    Total calculated
    $0
    Hours/week
    0.5

  • Liza Holeski

    Trustee

    Total calculated
    $0
    Hours/week
    0.5

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $937,704
    Expenses
    $732,487
    Contributions
    $353,448
    Grants paid
    $0
  • 2023
    Revenue
    $854,611
    Expenses
    $734,725
    Contributions
    $352,872
    Grants paid
    $0
  • 2022
    Revenue
    $665,723
    Expenses
    $976,732
    Contributions
    $466,396
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $826,850
    Expenses
    $718,763
    Assets (EOY)
    $2,860,070

  • 2020 · 990

    Revenue
    $603,860
    Expenses
    $614,272
    Assets (EOY)
    $2,773,756

  • 2019 · 990

    Revenue
    $662,501
    Expenses
    $700,799
    Assets (EOY)
    $2,609,976

  • 2018 · 990

    Revenue
    $704,145
    Expenses
    $876,045
    Assets (EOY)
    $2,702,924

  • 2017 · 990

    Revenue
    $867,020
    Expenses
    $891,777
    Assets (EOY)
    $2,945,108

  • 2016 · 990

    Revenue
    $629,725
    Expenses
    $827,193
    Assets (EOY)
    $3,026,720

  • 2015 · 990

    Revenue
    $577,820
    Expenses
    $829,007
    Assets (EOY)
    $3,166,235

  • 2014 · 990

    Revenue
    $548,932
    Expenses
    $775,802
    Assets (EOY)
    $3,515,380

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

The 10 largest by cash amount. The API serves every itemized grant.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 26 October 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.