Introduction

Repotting is one of the most important tasks involved in the successful cultivation of bonsai. It is absolutely vital to the trees survival. Trees growing naturally in the open ground can spread their roots as far as they need to reach water, obtain nutrients from the soil and get the oxygen they need for completing photosynthesis. Once you place a tree in a pot, be it a bonsai or a patio plant, it becomes dependent upon you to supply those needs. The roots will keep growing, it’s what roots do, but in a pot there is restricted room so you must make room by trimming the roots and repotting, making room for them to continue growing.