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Mark Hartley

Education Chair

Arborist Network

ARB Stream

Monday 8th April | 1:30PM


Writing tree transplanting specifications


Mark Hartley is a second-generation Australian arborist whose career spans over four decades. Mark has received the ISA’s Award of Merit for his contribution to arboriculture and has received six awards of Excellence in Arboriculture from the TCIA for transplanting and tree pruning.

His expertise in tree risk assessment, anatomy, diseases, and transplanting have resulted in him providing arboricultural services in 10 countries over three continents. He has provided advice to householders, celebrities, and Royalty alike.

Mark has always been passionate about learning and continues to study in Australia and overseas. He was a regular at Shigo’s tree anatomy workshops, where he developed a love for tree anatomy and everyday tree physiology. His curiosity, systems thinking, and problem-solving nature have assisted him in developing innovative solutions for tree transplanting and stem wound treatment.

Having served as the Education Chair of Arboriculture Australia for more than a decade, Mark is dedicated to improving education in arboriculture. He regularly spends time delivering workshops and training globally. Mark’s enthusiasm for arboriculture and engaging and dynamic delivery style will leave you wanting more.


Being involved with saving and moving large trees is often very satisfying work. Arborists and landscapers often perform the work associated with transplanting large trees. To successfully move large trees requires suitable specifications to be developed. Consulting arborists who understand tree anatomy are often best suited to write these specifications. However, to do this, the consulting arborist needs knowledge and skills that may not have been garnered through their education and training thus far. These include:

·  some of the advantages and disadvantages of transplanting large trees

·  understanding of the different methods that can be used to transplant trees, their advantages and disadvantages.

·  the key metrics used in determining the specifications

·  root plate (root ball) ratios for the various methods

·  some techniques for developing quick mass calculations of the above and below-ground portion of the tree

·  basic engineering issues associated with transplanting

·  problems and pitfalls that are commonly associated with transplanting big trees,

·  the key steps involved and the transplant processes and

·  understanding aftercare and how this is similar to and different from the care of trees left in situ.

While this presentation will not make you a transplant expert, it will alert you to gaps and weaknesses in your skills and knowledge and confirm what you already know and understand. Equally as importantly, the presentation will assist you in better interacting with those specialists you need to interact with when preparing transplant specifications.

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