Trees are the largest and longest living organisms on earth. Trees are the most important living things for our environment. Trees are sometimes mistreated due to lack of professionalism during planting, pruning and other arboricultural practices. International cooperation between people who work with trees whether in private or public employment develops a better knowledge of growing and maintaining trees. The European Arboricultural Council (EAC)...is a forum where delegates from various arboricultural organizations throughout Europe meet with the object of elevating the status and advancing the profession by liaising on matters ranging from research and education to successful tree establishment and improvement of working practices. This will lead to healthier and longer living trees in towns, parks, gardens, or where trees are grown to beautify Europe. The European Arboricultural Council (EAC) is needed to put the necessary pressure on the appropriate governing institutions and individuals.