Nonprofit · EIN 52-6057064
NATIONAL TROPICAL BOTANICAL GARDEN
Tax-exempt · KALAHEO, HI 96741
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2024 | 990 | $29,167,793 | $14,417,543 | $14,750,250 | $98,830,821 | $1,778,468 | $97,052,353 |
| December 31, 2023 | 990 | $12,932,790 | $13,631,747 | -$698,957 | $81,941,242 | $1,764,119 | $80,177,123 |
Financial details: 990 for the year ended December 31, 2024
Revenue
- Contributions, gifts and grants
- $19,675,335
- of which government grants
- $1,025,281
- Membership dues
- $506,986
- Program service revenue
- $6,091,474
- Investment income
- $2,599,535
- Net rental income
- $212,337
- Net gain from sales of assets
- $1,394,369
- Net income from fundraising events
- -$8,708
- Net income from sales of inventory
- $430,039
- Other revenue
- $801,449
Expenses
- Grants and similar amounts paid
- $37,000
- Compensation of officers, directors and key employees
- $328,921
- Other salaries and wages
- $6,256,184
- Salaries, compensation and benefits (total)
- $8,796,397
- Professional fundraising fees
- $0
- Legal fees
- $9,778
- Accounting fees
- $156,217
- Occupancy
- $582,842
- Travel
- $342,642
- Depreciation
- $1,310,037
- Program services (functional)
- $11,981,291
- Management and general (functional)
- $1,689,125
- Fundraising (functional)
- $747,127
Balance sheet and other
- Total assets, start of year
- $81,941,242
- Total assets, end of year
- $98,830,821
- Total liabilities, end of year
- $1,778,468
- Net assets, end of year
- $97,052,353
- Land, buildings and equipment
- $35,349,232
- Publicly traded securities
- $41,715,066
- Net assets without donor restrictions
- $36,252,014
- Net assets with donor restrictions
- $60,800,339
- Gross receipts
- $40,965,413
- Employees
- 171
- Volunteers
- 444
- Year formed
- 1964
- State of legal domicile
- HI
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.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| JANET L MAYFIELD | CEO & DIRECTOR Trustee or director, Officer | 60 | $173,319 | $19,527 |
| TAMARA A ROLLINS | CFO Officer | 60 | $130,590 | $5,484 |
| DEVON ANGELINI | TRUSTEE Trustee or director | 1 | $0 | $0 |
| GORDON L DEANE | CHAIRMAN Trustee or director, Officer | 2 | $0 | $0 |
| JAN D ELLIOTT | SECRETARY Trustee or director, Officer | 1 | $0 | $0 |
| HARRIET FRAUNFELTER | TRUSTEE Trustee or director | 1 | $0 | $0 |
| ADALINE H FRELINGHUYSEN | TRUSTEE Trustee or director | 1 | $0 | $0 |
| PETER C GARDNER | TRUSTEE Trustee or director | 1 | $0 | $0 |
| EMERSON KNOWLES | TRUSTEE Trustee or director | 2 | $0 | $0 |
| DR LINFORD L LOUGHHEED | TRUSTEE Trustee or director | 1 | $0 | $0 |
| MERRILL L MAGOWAN | TRUSTEE Trustee or director | 2 | $0 | $0 |
| DAVID RAE | TRUSTEE Trustee or director | 1 | $0 | $0 |
| JOHN H RASHFORD PHD | TRUSTEE Trustee or director | 1 | $0 | $0 |
| KATHERINE G RICHARDSON | SENIOR VICE CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| CYNTHIA SALLEY | TRUSTEE Trustee or director | 1 | $0 | $0 |
12 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| PATRICIA W SHEEHAN | TRUSTEE Trustee or director | 1 | $0 |
| ANITA SEIPP | TRUSTEE Trustee or director | 1 | $0 |
| CATHERINE TOPHAM | TRUSTEE Trustee or director | 1 | $0 |
| ROBERT D WEIST | TRUSTEE Trustee or director | 1 | $0 |
| THOMAS D HEWITT | PRIOR CHAIRMAN Trustee or director | 1 | $0 |
| MICHAEL N ROSENBERG DDS | TRUSTEE Trustee or director | 1 | $0 |
| ANNE G EARHART | VICE CHAIR Trustee or director, Officer | 1 | $0 |
| ELIZABETH E MATTHEWS | TRUSTEE Trustee or director | 1 | $0 |
| CAROL DICKINSON | TRUSTEE Trustee or director | 1 | $0 |
| PHYLISS EVANS SWINDELLS | TRUSTEE Trustee or director | 1 | $0 |
| SAM 'OHU GON III PHD | TRUSTEE Trustee or director | 1 | $0 |
| DR CHRISTOPHER D TURNER | TRUSTEE Trustee or director | 1 | $0 |
990 for the year ended December 31, 2023: 34 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| JANET L MAYFIELD | CEO & DIRECTOR Trustee or director, Officer | 40 | $166,542 | $21,852 |
| TOBIAS KOEHLER | DIRECTOR OF SOUTHSHORE GARDENS Highest-paid employee | 40 | $86,267 | $45,510 |
| HEATHER GEORGE | DIRECTOR OF PHILANTHROPY Highest-paid employee | 40 | $114,834 | $16,639 |
| NINA RONSTED | DIRECTOR OF SCIENCE Highest-paid employee | 40 | $102,249 | $24,525 |
| TAMARA A ROLLINS | CFO Officer | 40 | $115,766 | $5,536 |
| DAVID BRYANT | DIRECTOR OF COMMUNICATIONS Highest-paid employee | 40 | $94,452 | $14,805 |
| DEVON ANGELINI | TRUSTEE Trustee or director | 1 | $0 | $0 |
| GORDON L DEANE | CHAIRMAN Trustee or director, Officer | 2 | $0 | $0 |
| JAN D ELLIOTT | SECRETARY Trustee or director, Officer | 1 | $0 | $0 |
| HARRIET FRAUNFELTER | TRUSTEE Trustee or director | 1 | $0 | $0 |
| ADALINE H FRELINGHUYSEN | TRUSTEE Trustee or director | 1 | $0 | $0 |
| PETER C GARDNER | TRUSTEE Trustee or director | 1 | $0 | $0 |
| EMERSON KNOWLES | TRUSTEE Trustee or director | 2 | $0 | $0 |
| DR LINFORD L LOUGHHEED | TRUSTEE Trustee or director | 1 | $0 | $0 |
| MERRILL L MAGOWAN | TRUSTEE Trustee or director | 2 | $0 | $0 |
| DAVID W PRATT | TRUSTEE Trustee or director | 1 | $0 | $0 |
| DAVID RAE | TRUSTEE Trustee or director | 1 | $0 | $0 |
| JOHN H RASHFORD PHD | TRUSTEE Trustee or director | 1 | $0 | $0 |
| KATHERINE G RICHARDSON | SENIOR VICE CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| THOMAS L REVELEY | TRUSTEE Trustee or director | 1 | $0 | $0 |
| CYNTHIA SALLEY | TRUSTEE Trustee or director | 1 | $0 | $0 |
| PATRICIA W SHEEHAN | TRUSTEE Trustee or director | 1 | $0 | $0 |
| ANITA SEIPP | TRUSTEE Trustee or director | 1 | $0 | $0 |
| CATHERINE TOPHAM | TRUSTEE Trustee or director | 1 | $0 | $0 |
| JUDY C WEBB | TRUSTEE Trustee or director | 1 | $0 | $0 |
| ROBERT D WEIST | TRUSTEE Trustee or director | 1 | $0 | $0 |
| THOMAS D HEWITT | PRIOR CHAIRMAN Trustee or director | 1 | $0 | $0 |
| MICHAEL N ROSENBERG DDS | TRUSTEE Trustee or director | 1 | $0 | $0 |
| ANNE G EARHART | VICE CHAIR Trustee or director, Officer | 1 | $0 | $0 |
| ELIZABETH E MATTHEWS | TRUSTEE Trustee or director | 1 | $0 | $0 |
| CHRISTINA WILSON | TRUSTEE Trustee or director | 1 | $0 | $0 |
| CAROL DICKINSON | TRUSTEE Trustee or director | 1 | $0 | $0 |
| PHYLISS EVANS SWINDELLS | TRUSTEE Trustee or director | 1 | $0 | $0 |
| SAM 'OHU GON III PHD | TRUSTEE Trustee or director | 1 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 3530 PAPALINA RD, KALAHEO, HI 96741-9599
- In care of
- % JANET MAYFIELD
- Principal officer (990 for 2024)
- JANET MAYFIELD, 3530 PAPALINA RD, KALAHEO, HI 96741
- Signed the 990
- Tamara A Rollins, CFO
- Phone
- (808) 332-7324
- Website
- WWW.NTBG.ORG
Mission
TO ENRICH LIFE BY PERPETUATING TROPICAL PLANTS, ECOSYSTEMS AND CULTURAL HERITAGE THROUGH DISCOVERY, SCIENTIFIC RESEARCH, CONSERVATION, AND EDUCATION.
Program accomplishments
- LIVING COLLECTIONS: NTBGS GARDENS & PRESERVES ARE SAFE HAVENS FOR AT-RISK SPECIES THAT OTHERWISE MIGHT DISAPPEAR FOREVER. 140 ACRES ARE FORMALLY MAINTAINED. NTBGS COLLECTIONS ENCOMPASS 127K LIVING PLANTS, REPRESENTING 3,133 SPECIES AND 3,726 DISTINCT TAXA. THE STAFF AT NTBGS HORTICULTUAL CENTER & NURSERIES GROW AND SAFEGUARD RARE & ENDANGERED PLANTS FROM HAWAII & OTHER PACIFIC ISLANDS. MANY SPECIES THAT ARE ALMOST EXTINCT IN NATURE HAVE BEEN REINTRODUCED TO THEIR HABITAT BY NTBGS BOTANISTS. NTBGS COLLECTIONS ARE STUDIED BY VISITING SCHOLARS, RESERCHERS & STUDENTS FROM AROUND THE WORLD. NTBGS GARDEN IN FLORIDA, THE KAMPONG, IS THE FORMER ESTATE OF DR. DAVID FAIRCHILD, THE FAMED BOTANICAL EXPLORER. OUR GARDEN IN MAUI, KAHANU GARDEN, IS HOME TO THE PIILANIHALE HEIAU, BELIEVED TO BE THE LARGEST ANCIENT MAN-MADE STRUCTURE IN POLYNESIA.Expenses $5,754,435 · revenue $2,358,280
- SCIENCE & CONSERVATION: THIS PROGRAM IS FOCUSED ON PROTECTING & CONSERVING TROPICAL PLANTS. OUR FIELD BOTANISTS SURVEY MANY AREAS IN HAWAII TO ASSESS THREATS TO NATIVE SPECIES & COLLECT SEEDS & CUTTINGS FOR PROPOGATION, & ARE EITHER OUTPLANTED,PRESERVED IN THE HERBARIUM OR PLACED IN SEED STORAGE. NTBGS SEED BANK CONTAINS MORE THAN 18.5 MILLION SEEDS OF MORE THAN 943 TAXA. THE BOTANICAL RESEARCH CENTER IS THE HOME FOR THE GARDENS HERBARIUM, SEED BANK & A RARE BOOK LIBRARY THAT IS TEMPERATURE & HUMIDITY CONTROLLED & HOLDS OVER 1,200 VOLUMES OF BOOKS-SOME THAT DATE BACK TO THE 1500S. THESE COLLECTIONS ARE CRUCIAL FOR OUR RESEARCH, PUBLICATIONS AND EDUCATIONAL PROGRAMS. THE GARDENS BREADFRUIT INSTITUTE MANAGES THE LARGEST & MOST DIVERSE COLLECTION OF BREADFRUIT SPECIES & VARIETIES IN THE WORLD, WITH OVER 120 VARIETIES CONSERVED IN FIELD GENE BANKS. THE INSTITUTE PROMOTES THE CONSERVATION & USE OF BREADFRUIT FOR FOOD SECURITY, AGRICULTURAL SUSTAINABILITY & ECONOMIC DEVELOPMENT. NTBG IS ALSO A COLLABORATIVE PARTNER WITH FIU IN THE DEVELOPMENT OF THE INTERNATIONAL CENTER FOR TROPICAL BOTANY IN FLORIDA. THE CENTER IS DESIGNED TO EDUCATE & BRING TOGETHER BOTANISTS FROM AROUND THE WORLD TO SHARE KNOWLEDGE.Expenses $3,124,036 · revenue $2,360,595
- EDUCATION: NTBG BELIEVES THAT EDUCATION IS KEY FOR PRESERVATION OF TROPICAL PLANTS & ECOSYSTEMS. TOURS ARE OFFERED THROUGH ITS GARDENS TO EDUCATE THE GENERAL PUBLIC ABOUT THE NEED TO PRESERVE TROPICAL FORESTS RICH WITH NATIVE BIODIVERSITY AND TO PROTECT OUR ECOSYSTEMS & RESOURCES THAT WE RELY ON FOR OUR OWN WELL-BEING. IN 2024, OUR BOTANICAL GARDENS HAD 110,379 VISITORS FROM AROUND THE WORLD. OTHER EDUCATIONAL ACTIVITIES INCLUDE FORMAL AND INFORMAL LECTURES, BOTANICAL ILLUSTRATOR COURSES, INTERNSHIPS & WORKSHOPS FOR COLLEGE PROFESSORS, HIGH SCHOOL TEACHERS & ENVIRONMENTAL JOURNALISTS. SCIENCE STAFF REGULARLY PROVIDE ARTICLES IN SCIENTIFIC PUBLICATIONS. THE SCIENCE STAFF HAVE COLLABORATED ON & PUBLISHED SEVERAL BOOKS ON TROPICAL FLORA. THE LOY MCCANDLESS MARKS BOTANICAL LIBRARY CURRENTLY HOLDS OVER 20,000 VOLUMES, 3,000 ORIGINAL BOTANICAL ARTWORKS & PRINTS, 6,000 PHOTOGRAPHS & 16,000 COLOR SLIDES. THE LIBRARY COMPRISES ONE OF THE FINEST COLLECTIONS OF TROPICAL BOTANICAL & HORTICULTURAL REFERENCE COLLECTIONS IN THE PACIFIC BASIN. THE KAMPONG, IN COCONUT GROVE, FL IS HOME TO THE FORMER RESIDENCE OF DR. DAVID FAIRCHILD, AN AMERICAN BOTANIST WHO WAS RESPONSIBLE FOR THE INTRODUCTION OF MORE THAN 200,000 EXOTIC PLANTS & CROPS IN THE U.S.Expenses $3,102,820 · grants $37,000 · revenue $5,130,335
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 June, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | Not due yet |
| 2024 | June 30, 2025 | November 17, 2025 | Not on file |
| 2023 | June 30, 2024 | November 15, 2024 | Check at the IRS |
IRS record
- EIN
- 52-6057064
- 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
- 1971
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Environment (C410)
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2024 | $29,167,793 | $14,417,543 | $98,830,821 | XML |
| 990-T | December 2024 | – | – | – | IRS |
| 990 | December 2023 | $12,932,790 | $13,631,747 | $81,941,242 | XML |
| 990-T | December 2023 | – | – | – | IRS |
| 990 | December 2022 | $15,141,654 | $12,903,414 | $80,182,510 | IRS |
| 990-T | December 2022 | – | – | – | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990-T | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990-T | December 2020 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
| 990 | December 2017 | – | – | – | 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 52-6057064).
Questions about NATIONAL TROPICAL BOTANICAL GARDEN
- What is the EIN of NATIONAL TROPICAL BOTANICAL GARDEN?
- The employer identification number (EIN) of NATIONAL TROPICAL BOTANICAL GARDEN is 52-6057064.
- Is NATIONAL TROPICAL BOTANICAL GARDEN tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1971.
- Are donations to NATIONAL TROPICAL BOTANICAL GARDEN tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does NATIONAL TROPICAL BOTANICAL GARDEN 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 NATIONAL TROPICAL BOTANICAL GARDEN due?
- The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did NATIONAL TROPICAL BOTANICAL GARDEN last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2024.
- Who is the principal officer of NATIONAL TROPICAL BOTANICAL GARDEN?
- The 990 for the year ended December 31, 2024 names JANET MAYFIELD.
- Who are the officers and directors of NATIONAL TROPICAL BOTANICAL GARDEN?
- The 990 for the year ended December 31, 2024 lists 27 people; 2 received compensation from the organization, the highest $173,319 (JANET L MAYFIELD, CEO & DIRECTOR).
- How much revenue does NATIONAL TROPICAL BOTANICAL GARDEN have?
- On its 990 for the year ended December 31, 2024 it reported revenue of $29,167,793, expenses of $14,417,543 and total assets of $98,830,821 at year end.
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