Mission
To increase the appreciation, understanding, and conservation of plants and plant communities native to the Colorado Plateau.
Public Charity
Transition Zone Horticultural Inst
Transition Zone Horticultural Inst, of Flagstaff, AZ, is a Public Charity tracked in Imperigo's IRS 990 database. The 2024 filing shows $938K in revenue, $732K in expenses, $2.8M in total assets. 22 publicly reported grants to this organization, totaling roughly $503K, appear in IRS filings.
EIN: 942788812
Flagstaff, AZ
Latest filing: 2024
Total Revenue$938K
Total Expenses$732K
Total Assets$2.8M
Grant Records22
Funding Total$503K
Filing Years2020–2024
Sample Grants Received
EXPERIENTIAL EDUCATION PROGRAMS AT THE ARBORETUM
$71,181
PLANT SPONSORSHIP AND NATIONAL COLLECTION PAYOUT
$21,250
For grant recipient's exempt purposes
$14,250
BOTANICAL GARDENS & ARBORETA
$10,000
GENERAL SUPPORT
$54,000
Showing up to 5 of 22 total records — full history available with membership.
Officers & Directors
Trustee
Austin Leggett
Trustee
Brian Webb
Trustee
Celia Holm
Trustee
David Grede
President
Dennis Kruse
Secretary
Ellen Wade
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2024 | $938K | $732K | $2.8M |
| 2023 | $855K | $735K | $2.7M |
| 2022 | $666K | $977K | $2.5M |
| 2021 | $827K | $719K | $2.9M |
| 2020 | $604K | $614K | $2.8M |
Between 2020 and 2024, reported annual revenue grew from $604K to $938K (+55%), with total assets most recently reported at $2.8M.
Interactive year-over-year charts and full filing details available with membership.