Second Repotting on a Ponderosa Pine. A bonsai tree second repotting is as pivotal as its first introduction to the containerized environment. In a second repotting on a Ponderosa Pine tree, we eliminate remaining field soil while leaving the initial root system we’ve created intact; we complete the system of exchange to domesticated soil and achieve a higher balance of water and oxygen. Understand the strategies and techniques behind this crucial step to set your bonsai tree’s root system up fo