Oskar Elmgart


Yosemite National Park

Co-Founder

As an experienced early childhood educator, following more than a decade and a half long investment banking career, Swedish-born Oskar Elmgart returned to his passion to lead Treebath’s outdoor children’s programs. Oskar created Treebath’s sustainability curriculum, loosely  based on a successful 60-year  old Swedish after-school program he attended as a child. Oskar applied his aptitude for a student-directed teaching style to develop  a  program that encourages hands-on learning and  a  life-long respect  for our natural environment.  Oskar  is committed to instilling both empathy and structure in the lives of  his own children as well as those he teaches.  

With a Master’s of Science from Gothenburg University and service in the Swedish Royal Marine Commandos, Oskar is accustomed to spending  time outside regardless of the weather. He strives to instill in both children and adults the joy of nature that humans so naturally crave. Oskar further brings his banking experience to running Treebath’s financial operations and planning. Oskar has also been an integral part in the development of Treebath’s Forest Therapy Practitioner training course, which is first of its kind to be approved for continuing education credits by Association of Social Workers Board (ASWB).

Oskar works with schools, school districts and local government to provide customized outdoor  programming that combats the growing number of health concerns in children attributed to a lack of  green time, such as poor concentration, lack of focus, childhood obesity, ADHD, and decreased vision development. Oskar aims to ensure all of today’s children are afforded the proven health and wellness -benefits of “green time”.  When it comes to adults, Oskar is very active within the recovery community where he dedicates his time time to helping others.

Oskar has been interviewed and featured in a variety of publications including National Wildlife Magazine, CNBC, and Swedish NPR (SR P1). Oskar is a co-author of the forthcoming children’s book “A Bath Without bubbles: Rowan & Jake’s First Treebath.”  

Oskar is Wilderness First Aid Certified and is a Certified Forest Therapist