South Dakota Licensed Arborist Mike Vellema, owner of Champion Tree Service is a licensed Arborist in Sioux Falls South Dakota. I have met the required state standards that include testing on the knowledge of all aspects of tree care and maintenance. You are covered when you work with Champion Tree Service! Tree Climbing Services with Champion Tree Service What makes us different than all other tree removal companies? What makes us different than all the other tree removal services? The most noticeable difference is that we are tree climbers.