For our 2019 import of bonsai from Japan, we selected the trees in various export gardeners around Tokyo and Yokohama in September 2018. The first video shows impressions from one of the gardeners visited. A part of the purchased Satzuki azaleas can be seen in the second video.
The container arrives at Wenddorf in mid-March 2019. After the inspection of the bonsai by the plant protection all trees except the white pines and juniper are immediately available. Pines and junipers have to remain in quarantine until about July.
Root cells need, like other plant cells, oxygen.
For that your bonsai soil should be well-drained and should have sufficiently large drainage holes in the bottom of the bonsai pot.
Especially with large drainage holes the substrate trickles after repotting from the drainage holes. Therefore, these openings are covered with plastic grids.
How to do that ? Quite simply. Just follow this step by step guide:
It should be slightly larger than the drainage hole of the bonsai pot.