1. Choose the pots
"Picking the right pot is a trade-off between what is horticulturally correct and what is aesthetically appropriate for the stage of development of a bonsai. Once the tree reaches a state of high refinement, it deserves an attractive, quality pot to achieve visual balance with a suitable size to restrict coarse growth whilst keeping the tree healthy."
"Bonsai pots need holes in the base to allow excess moisture out and feet on the pot base to let air in. While looking for the right pot, it is important to understand the tree’s character and gender. Colour and texture are other two key factors to consider before buying a pot. The colour really depends on the bonsai features, like spring blossoms, fruits or vibrant autumn foliage. In general, it is better to avoid going for an exact match and instead look for colours which complement the character of the tree. Deciduous trees are traditionally planted in glazed pots whereas evergreens and conifers prefer unglazed containers."