A couple months back, we talked about making a perfect potting mix for bonsai. Mike Miller demonstrates this by making a custom potting mix for bonsai that he is going to use with a juniper he is re-potting. In this extended version, 2-part video, Mike explains most everything you need to understand about making bonsai mixes and how to sieve / sort them by size in order to make 3 different “layers” of soil for your bonsai pot. This technique increases the growth rate of bonsai and seems to keep the plants healthier. One of the main things we have to guard against from time to time is root rot and diseases caused by soggy conditions. This soil mix virtually eliminates this issue.