An intensive training in Velika Gorica prepared urban tree maintenance professionals for the European Tree Worker (ETW) certification. Participants gained essential knowledge in tree assessment, pruning, safety, and urban tree management, with a focus on the ecological benefits of trees. Theoretical and practical sessions and a dedicated "Toolkit" equipped them with strategies to enhance tree care in urban settings. The program concluded with a field tour and a certification exam overview, advancing expertise in urban arboriculture across Croatia.