specialists in scientific Plant Health Care for trees

Collecting sophisticated plant health data using our unique methodology and technology enabling optimal holistic tree management

Arresting accelerating decline of urban trees by building healthy soils

Building healthy soils with a focus on sustainable NPK - Nutrient, Physical structure and Key biology

specialists in scientific Plant Health Care for trees

Collecting sophisticated plant health data using best practice technology and software, empowering local communities using citizen science programs.

Arresting accelerating decline of urban trees by building healthy soils

Building healthy soils by improving soil biology, chemistry and physical structure

What we do

G.U.F. are leading specialists in Plant Health Care, building healthy soils to improve individual tree health in the Urban Forest.

Read More

How we do it

G.U.F prepares and implements Plant Health Care (PHC) programs to enhance, protect and manage any type of plant material in the Urban Forest.
Whether it is an entire park of trees or a single high-value specimen, G.U.F are experts in PHC

Read More


City of Glen Eira

Tree decline from construction development is widespread throughout the Urban Forest. The common factors are ...

Read More

Cypress Canker – Cypress Dieback

G.U.F have successfully remediated hundreds of cypress canker infected trees with our unique soil health remediation programs.

Read More

Armillaria luteobubilina Remediation PHC Program

G.U.F has successfully identified and remediated many highly infected sites over the past decade to restore plant health and remove/ suppress dangerous plant diseases.

Read More

Adelaide City – Veal Gardens – Plant Health Care Program

A long-term 4-year investigation study and remediation program into Urban Forest plant and soil health. The concept of defining Soil Health through a Sustainable N.P.K - Nutrient, Physical Structure and Key Biology

Read More

about us

G.U.F specialises in Scientific Plant Health Care for trees

  • Collecting sophisticated plant health data using best practice technology and software, empowering local communities using citizen science programs.
  • Building healthy soils by changing soil biology and chemistry to arrest the accelerating decline of urban trees to optimise the health of valuable trees

Most people live in cities, and most cities are becoming more dense, reducing private open space and increasing the pressure on public open space. Public open space is a major factor in liveability, economic development and population health and most people expect high functioning trees in urban spaces. Urban forests are vital for cities and it’s people by,

  • creating more liveable environments
  • providing access to nature
  • improving air quality
  • canopy cooling and water management

It is only large healthy trees that provide these functional benefits.

The G.U.F assessment is that most urban trees are in decline.  The City of Melbourne, regarded as the most advanced local government tree manager in Australia, estimates it will lose 40% of its current tree stock in less than 20 years.

Urban tree replacement due to mature tree failure is already taking place. In many cases replacement trees are also dying within 10 years, indicating soil health is a likely cause of failure. G.U.F sampling indicates that many urban soils are compacted, have toxic chemistry and low biological activity resulting in declining tree health.

G.U.F believes local communities are key stakeholders in the future of successful urban forests and is already working with a number of local community groups in citizen science tree health data collection and urban forest projects. 

G.U.F practices have identified current data collection methodologies are very limited. G.U.F is working internationally to develop and refine methodologies to more accurately measure plant health and the functional values that trees provide. New measurements include soil health data, photosynthesis function, and canopy cooling effects.

A global trend of acknowledging that trees are key natural assets that will provide multiple services to cities has one common theme, ‘Canopy Function’. Individual widely spaced juvenile trees seen in artist impressions do not provide these services. The greatest canopy benefits are from large mature healthy trees with large volumes of overhanging biomass.  For trees to grow and provide significant canopy overhang they must have healthy root systems in healthy soil. Trees in poor health do not provide the functional value expected. Trees in poor health cannot provide the return on investment that is expected from them.
Understanding and documenting a functional tree value is the next big game changer in Urban Forestry


I would have to say that Matt is one of the best that the arboricultural industry has to offer.
Matt has a unique ability for looking at the bigger picture while addressing the situation at hand. It is this quality that makes Matt not only an excellent practitioner but also a gifted teacher. Matt knows that education is key and is constantly learning and seeking new ways to better his skill set.

He takes a positive approach to every challenge that comes his way, he is an absolute pleasure to work with and it has been a privilege to know him.

Matt is a total professional in every sense of the word and I know will be successful in anything he puts his mind to!

Chuck Sherzi, Jr.

Sherzi & Company LLC
Boston USA

I just wanted to send out a note thanking you for your time. Your work is extremely interesting and I'm interested in following up on ideas for future collaboration. Your demonstration of the photosynq instrument was interesting and I think that might be a good place to start as we deploy crews next summer to evaluate tree health. 
Thanks Again

Richard Hallett, PhD 

Research Ecologist
USDA Forest Service
New York City Urban Field Station

I'm very intrigued by your work - it sounds like you have been able to bring some pretty sophisticated soil and plant physiology measurements into urban forest management.

Nancy Falxa Sonti

USDA Forest Service
Baltimore Field Station

Matthew, Firstly can I say a huge Thank you on behalf of the Swinburne University of Technology and especially from myself and the students who attended your presentation to introduce PhotosynQ to the class. I was immensely impressed by the platform and the amount of data that can be measured and then collected to analyse the Tree / Plant Health.
From Swinburne University's point of view, we would like to work more closely with you Matthew and PhotosynQ to see what we can do to assist in this technology being exposed and adopted by Industry, Government and other allied bodies to assist in the data collection which will contribute in furthering our collective knowledge regarding Urban Forestry and Climate change.
The potential for this platform and technology is immense and I can recommend anyone to trial this and see how easy and straightforward it is to work with for collection of Tree Health data.
Cheers again and well done to all involved and look forward to bright future for PhotosynQ.

Frank Somerville

Landscape Coordinator/Arborist
Swinburne University Of Technology
Melbourne, Australia.

Matthew, It was fantastic to see everyone so engaged and inspired, I’ve had really positive feedback from everyone I’ve spoken to. We will have to harness the enthusiasm to see what changes we can make as an organisation.

Thanks again for a great workshop!

Jacqui Monie

Urban Designer
City of Darebin - Victoria - Australia

Hi Matthew,

I would just like to follow up with a huge Thank you on behalf of myself, students and Swinburne University of Technology for your presentation that you gave to the class undertaking the units of Assess Trees and Identify, Select and Specify Trees on the 3rd of May 2016.

I cannot say enough about how wonderful and informative your talks and PPT’s are for students at all levels of training.

Also the passion that you brought to the classroom and in your presentations inspired and informed the students of so many advancements and opportunities within the areas discussed.

The feedback from students straight after your presentation was so positive and motivating for them that they were all buzzing from it, which is absolutely fantastic and a credit to you, and to Tree Preservation Australia for allowing you to share your time, knowledge and energy with them.

The information you delivered is cutting edge and science based which gives our students the opportunity to see how the Arboricultural industry is adapting and changing to provide science based data to enable us all, to better understand and manage our Green Environments.

I wish you all the best in your future projects and hopefully to have you come back to talk to other students in the future as your knowledge and passion is invaluable.

Once again it is a pleasure and honour to have you as a guest speaker.

Cheers for now

Frank Somerville

Swinburne University of Technology
Melbourne - Victoria

Hi Matthew just a quick few words about the trees on High Street Road, I have noticed a distinct difference in the foliage of these trees in the last few months !!! I have been delivering in the area for almost 24 years and these trees seem to have been given a new lease on life , these trees have significant historical value and to see them gaining new leaves on their branches is awesome keep up the good work on trees on high ( guard of honour ) WW1.
Regards John


Australia Post

To who it may concern. My name is Jennifer Erdos I am a resident of Sydney Street, Prahran . Number five. I have watched the trees opposite over the years and at one stage I was sure they wouldn't last much longer. However since the arborist has been treating them the difference has been amazing. They really look so much better. Masses of new healthy leaves increasing every day. It is wonderful they have been saved. Jennifer Erdos

Jennifer Erdos

Contact Us

Send Global Urban Forest a message