Up-potting made easy for trees in development.

Regardless of your chosen developmental process, quite confidently one can conclude, the more space a tree has to grow in the larger it will get. Link this to our developmental goals it becomes clear that we need to maximise this.

I like to use pond baskets where possible for trees in development and that’s for a few reasons. One of these reasons is that up-potting a tree in a pond basket is simply done by placing the existing container into a larger pond basket. There is no stress to the tree and it allows you to react quickly to the need to up-pot at any stage.

Pond baskets have the advantage of providing more oxygen into the root ball. The allowance of more oxygen and increased drainage capacity allows for more frequent watering and fertilisation which in turn can result in accelerated growth. This is all while maintaining a ‘bonsai manageable’ rootball and not something you would typically find in a nursery container or field grown material.

Identifying the need to up-pot and acting on it timeously can drastically reduce development time, as this allows the root ball to increase in size and in turn support greater top growth.

Pictured here a +_10yr old Kahikatea (Dacrycarpus dacrydioides) in development. This tree has grown rapidly since being planted into this pond basket last year. If this tree was on the ground instead of a bench those escape roots would have gotten a lot thicker and I would have seen even more growth but the trade off would have been less fine roots in the pond basket. By utilising another pond basket I get the benefit of the roots escaping into another soil medium, but one that is more controllable.
The new pond basket. At this time it is also possible to change the angle of the planting. Here I was able to correct the lean slightly. Soil medium is a mix of pumice and akadama.
Up-potting complete, a quick but important task and one that will see the development of the tree continue well into the season and beyond.

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