The principles of planting and repotting are the same. Plants need to be firm in the compost to prevent air pocket around theit roots and have adequate drainage to avoid waterlogging.
All plants grown in containers should be planted the same way. When you are potting, choose a container 5 cm (2 in) larger than the rootball of the plant. Remove the plant from the original container and gently tease out the roots if they have become congested. Trim off any damaged roots. Put a good layer of crocks, broken tiles or stones at the bottom of he container and then a layer of compost. Put the plant in the container, making certain that the soil level is the same in the new container as it was in the old. Add compost around the sides of the pot making sure that it is pressed firmly against all the roots.