Jack Kimmel International Grant Program


The Jack Kimmel International Grant Program, championed by the Canadian TREE Fund, honors the late Jack Kimmel who was the former Director of Parks for the City of Toronto. He is remembered for his contribution of 46 years of leadership to the ISA and its Ontario chapter. Jack Kimmel grants provide much needed funding to arboriculture and urban forestry researchers all over the world. This grant is administered by TREE Fund, with participation from the Canadian TREE Fund in the evaluation process.

These grants are available to researchers whose work is primarily outside of the United States. Projects are expected to be completed within one to two years. Grant award amounts are limited to a maximum of $10,000 and will vary depending upon the adjudged value of the project relative to the needs of the arboriculture community. No project may receive more than one award from this program.


Grant Cycle Open: August 1, 2024
Last Day to Request Letter of Inquiry: September 15, 2024
Grant Application Due: October 1, 2024
Announcement of Grant Recepient: Late December, 2024

The first step to apply for this grant is to send an email containing a Letter of Inquiry (LOI) of no more than 100 words describing your project title and concept to hhupke@treefund.org between August 1, 2024 and September 15, 2024.

LOI Requirements:

  • No more than 100 words
  • Include project title and concept
  • Identify Principal Investigator and Institution who will be contracted for the work
  • Note you wish to apply for the Jack Kimmel International Grant Program

If your LOI is approved, TREE Fund will send you a numbered application form for your use. Information for the Application Requirements can be found here. You may not apply without such a numbered application form. TREE Fund determines on whether an LOI meets the application criteria are final and not negotiable.


Application Requirements can be found here.

Projects are expected to be completed within one to two years with a maximum grant award of $10,000. No project may receive more than one award from this program.

Note Well:  In 2024, TREE Fund’s Jack Kimmel International Grant program will be focused specifically on the three areas of emphasis listed below.  Although the three areas are firm but inclusion of topics within is open to discussion.  Contact our office sooner rather than later if you have questions.

  • Arboriculture: Theory and Practice  (to include pruning, fertilization, climbing, etc.)
  • Tree Health
  • Risk Assessment and mitigation (including all aspects of decay and structural integrity)

Letters of inquiry for Kimmel Grants that do not focus on topics related to the focus area will be rejected from further consideration. TREE Fund welcomes research proposals and applications from a wide range of academic and technical disciplines, of both a qualitative and a quantitative nature. TREE Fund does not fund the following types of projects, and will not accept applications for such work:

  • Grants to individuals;
  • Projects that are primarily municipal tree surveys or assessments;
  • Tree planting programs;
  • Studies of individual tree species for the primary purpose of agricultural or timber/forest planting yield;
  • Commercial tree- or soil-related product testing primarily for the benefit of the company that manufactures the product.



Recommendations on grant awards will be presented by the Research Committee to the TREE Fund Board of Trustees for approval in December 2024, and grant recipient(s) will be notified in writing within one month of Trustee approval. A Grant Agreement form that includes a payment and reporting schedule will be provided with award notification. It must be completed within one month of notification, and returned to TREE Fund with all required supporting documentation.

Applicants are most strongly encouraged to review the sample Grant Agreement form (which can be viewed here) with their employers’ financial or grant management offices prior to submitting an application, to ensure that the Agreement forms can be signed expeditiously upon receipt. Potential difficulties with Agreement terms that are identified during the application process may be considered and negotiated more favorably than those presented after the grant award process.


It is TREE Fund’s explicit desire that research findings eventually be freely and widely available to any and all parties who may benefit from the author’s work. At the same time, TREE Fund recognizes the importance of academic and professional journal publications and will work with grant recipients to ensure that findings are disseminated in a manner that is cognizant of all parties’ schedules and needs. Recipients should inform TREE Fund when funded research findings are published or presented at conferences so that these accomplishments can be widely publicized. Recipients should also recognize the support provided by TREE Fund in their articles or presentations related to the funded project. Recipients are strongly encouraged to publish findings to relevant professional journals, i.e. Arboriculture and Urban Forestry, Urban Forestry & Urban Greening, Arboricultural Journal, Trees: Structure and Function, Journal of Horticultural Science and Biotechnology, Plant Pathology, Hortscience, Horticultural Science, Sustainable Development, Landscape and Urban Planning, Journal of Urban Health, Environment and Urbanization, Urban Ecosystems, etc.


Recent Jack Kimmel Awards

2023 was awarded to Dr. Petr Hedenec with University Malaysia Terengganu on project, “Light-side of the termites: Distance effect of termite nests on tree growth and pathogen resilience of tree species in Taman Botani at UMT.”

2022 was awarded to Dr. Huade Guan with Flinders University on project, “A pumping-test analoguefor characterizing root-zone and plant integrated hydraulic systems based on above-ground measurements.”

2021 was awarded to Dr. Justin Morgenroth with The University of Canterbury on project, “Optimizing tree responses to root pruning in mature trees.”