The Art and Science of tree pruning

The conference will now give you 6.5 ceu's for the first day. MAKE SURE YOU HAVE YOUR CERT NUMBER WITH YOU or you won't be able to sign for them.

Kungliga Djurgårdens förvaltning

The Swedish Arborist Federation in collaboration with Kungliga Djurgårdens förvaltning. An international conference 26 April 2013, The Royal Mint, Stockholm.

Trees have evolved with specific solutions for maximising their assimilation of light, carbon dioxide, nutrients and water. Their species specific morphology and ecological strategies are central to their survival and has resulted huge variety of size, form and function which the arborist must understand in order to prune correctly without having major impacts tree health and structural safety. Arborists need to understand trees physiology, defence systems and the way in which trees respond to pruning both in the short and long term. Arborists soon learn that the best results are achieved with practice, feeling and a continuous search for perfection that is effectively unattainable.

This can only be described as an Art.

This one day conference will cover the basics of tree pruning, defence mechanisms, tree phenology, tree structure and the bio-mechanical effects pruning has on tree stability in wind. The speakers will also cover new material and research which challenges some commonly accepted knowledge.

Dr Ed Gilman

Author of An Illustrated Guide to Pruning 3rd edition. 2012. Dr. Edward Gilman received his Ph.D. from Rutgers University in 1980 in forest plant pathology. He has been on the faculty at the University of Florida in Gainesville since 1986 as professor in the Environmental Horticulture Department. Dr. Gilman conducts research and educational programs in tree selection, urban design, nursery production, and urban tree management nation-wide for arborists, landscape architects, plant growers, and contractors. He serves the landscape industry and allied professions through an applied research and education program. His research emphasizes the effects of nursery production method on tree quality, tree establishment rate, water requirements after transplanting, and tree pruning and stability. He has published more than 200 technical articles in journals and trade magazines and annually presents research results to colleagues at professional meetings. He is the author of six books and many horticultural CD-ROMs and enjoys life in Gainesville Florida, where he and his wife Betsy raised their two children.

His numerous awards include:

  • Three awards from the American Society for Horticultural Science for his extension education programs and books,
  • Two from the Florida Nursery and Growers Association for his contribution to the growers including 2003 Educator of the year,
  • Two from the Florida urban forestry council for his educational efforts in urban forestry and arboriculture,
  • The Authors Citation Award in 1999, and
  • The Educators award in 2003, and
  • The Richard Harris Researcher Award in 2007 from the International Society of Arboriculture
  • The Gunlogson Award in 2001 from the American Horticultural Society for development of electronic based horticulture information.

In addition to teaching throughout the US since 1978, Dr. Gilman has taught in seven countries. He has assembled a unique urban tree teaching program for helping municipalities, contractors, arborists, educators, landscapers, and others design and implement programs for promoting better tree health in cities.

Frank Rinn

Frank Rinn Physicist (Rinntech) Hiedelburg, Germany. Since the late 1980s, Frank Rinn’s name has been inextricably associated with the RESISTOGRAPH®, the world’s first hand-held measuring unit that precisely detects the inner condition of trees and wood. His innovative work has been crowned with numerous awards (1989, 1992, 1997 and 1998). Many of the devices developed by him have been patent-protected. Frank has more recently developed software for windload (Arwillo), tomography (arbortom) and bending moment (Dynatim) which is enabaling arborists to make more informed decsions on pruning effects.

Neville Fay

Neville Fay, England - Director and principal consultant for Treework Environmental Practice. Neville was the chair of the Ancient Tree Forum until 2010 and was the founder of the charity Tree Aid. Neville co-devised the national standard for surveying veteran trees in the UK. He is co-author of the book "Veteran Trees - a guide to risk and responsibility" together with Caroline Davis and Charles Mynors, and author of "Tree Surveys: a guide to good practice".


SAF members 1800kr
SAF membership + conference 2300kr
For non SAF members: 2500kr

Students prices

SAF members 1000kr
SAF membership + conference 1300 kr
For non SAF members: 1500kr

To be able to pay student prices you have to be able to present a valid mecenat card. Proof can be sent in as a picture via email and you have to be able to show it on demand at the conference.


The 40 first that register will get a once in a life time chance for a field day together with the speakers the 27th of april. So hurry up and register!


Registration is closed.

Questions regarding the event or about the registration can be directed to