It's important that you purchase only pots which are specially manufactured to use for bonsai trees because they are pre-designed to have two types of holes: drainage holes as bonsai trees require lots of watering and secondly, holes for passage of training wire which is used to retain the shape of bonsai trees when potting.
Size matters especially when you're still in the process of taking care of a growing bonsai tree. Nursery or wild trees have more stringent requirements when it comes to pots so if it's your first time to take care of a bonsai tree, do make sure that you ask professional advice first.
Consider the length, width, and height of your bonsai pot. Growth of your bonsai tree can be affected adversely if you choose the wrong dimensions for your bonsai pot. For the width of your bonsai pot, make sure that the pot is just as wide as the length of the stems or branches of your bonsai tree. The height on the other hand should just be of similar measurement to the overall width of the trunk of your bonsai tree.
Shape, in some instances, can also affect the rate of growth of bonsai trees so do be sure you're choosing the right shape as well for your plant.
Color is only a factor if you believe in color psychology or aesthetics is very important to you. You can choose pots in solid colors if you prefer to go for understated beauty or printed or polychromatic designs if you wish for your garden to become more eye-catching.
Consider the pot material. If you wish for something durable, you can choose bonsai pots that are made of heavy duty plastic as these are non-breakable and supported with lifetime warranty. Clay pots are typical but easily breakable. Cement bonsai pots are sturdier but cost more. Wooden pots are ideal if you wish to go for a more authentic look.
Lastly, consider the landscape of your garden. Your choice of bonsai pot can make your bonsai tree either stand out or blend in perfect harmony with the landscape. Either way is fine and only considers your preference.
