To make the bonsai, the small tree is taken out of the ground. Its roots are carefully cleaned of dirt. The roots may be trimmed (cut) a little to help them fit in a small pot. The branches may also be trimmed to make the tree smaller. Then it is put in a bonsai pot, which has low sides. Fresh soil (dirt) is put in the pot to cover the bonsai tree's roots. Then it is watered and put outdoors to live.