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Using Double Pots

3 years 8 months ago #53818 by Ray Mackaway
Hi Folks,
I am taking some trees to the School of Bonsai tomorrow to show what happens with double potting. These photos will show the difference between one pot and double pots. I potted these two trees at the School some time back. They were both just seedlings, one went into a single pot, the other went into two pots. Tomorrow at the School I will remove the colander out of the orchid pot, remove all external roots from around the colander and replace the colander and tree back into the orchid pot with new potting mix. This method is helpful for those who don't have a lot of garden space or live in a unit.

The method I use for planting in two pots is to plant the tree in a colander with good bonsai mix. The colander is then placed in the orchid pot using a good quality potting mix. This doesn't have to be bonsai mix. The second pot can be as large as you require. I have used an orchid pot for this exercise, but if you have a larger tree you can use a tube size pot.


Planted in a single colander. This tree is 1.1meters tall.



The roots come through the colanders very easily.



Planted in a colander then planted in an orchid pot. This tree is 1.9meters tall.



The roots have grown through the colander and out the orchid pot.


Regards Ray

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3 years 7 months ago #53873 by Ray Mackaway
Hi folks,
Another use of double potting. The following method is useful for growing trees on without disturbing the root ball. This method can also be used to pot trees when it is not the ideal time of year to do so.



This is a group of Swamp Cyprus that has outgrown the tray. I didn't want to disturb the trees. There are a lot of roots growing out the bottom of the tray so placing them in a second tray will allow the trees to grow on and they haven't been disturbed in any way.



I use the same method as mentioned in the beginning on this thread. The soil in the second tray is a good quality potting mix, it doesn't have to be bonsai mix.
NOTE: If the tree/trees outgrow the second pot and you don't want to disturb the tree/trees, you can triple pot.



This Banksia had this treatment applied to it. The second colander was removed and the roots cut back to the outside of the first colander and then replaced in the second colander again. I did this at least once if not a couple of times. This is another advantage of using two pots. The tree can be removed from the second pot, cut back the roots and replace into the second pot with new soil.

Regards Ray

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