Flower and Greenery Column

桜盆栽の植え替え

Repotting a cherry blossom bonsai

There are only two months left in this year.
Is there anything you haven't done yet?
The only thing I have left to do is "replant the cherry tree"!!
This one-year-old cherry blossom tree bloomed beautifully this spring.
In the summer you can enjoy the lush greenery, and in the fall the leaves fall off, leaving it looking like this!

Cherry bonsai defoliation

The drainage has been getting worse recently, so I'm thinking of repotting it.

Time to repot

It is recommended to replant cherry trees in November after the leaves have fallen, or in February to early March before the flower buds begin to appear.
Repot the plant every two to three years.
It's been a year since I got this plant, but the drainage has become poor when I water it, and I think the roots may be crowded, so I would like to repot it.
Also, since repotted trees are delicate, check the weather forecast and avoid planting them the day before the weather suddenly gets cold.

What you need to repot

New pot

The new pot you are repotting into should be one size larger than the pot it is currently in.

Cherry blossom bonsai in a new pot

Cherry trees prefer well-drained and well-aerated soil.
It is convenient to have commercially available bonsai potting soil or soil specifically for cherry blossoms.
This time we will use a potting soil mixture of Akadama soil and vermiculite.

Pot bottom net and pot bottom stones

Use a pot bottom net to prevent soil from leaking out of the holes in the bottom of the pot, and use gravel to improve drainage and ventilation.

Gardening scissors

Use it to cut off overgrown roots.
Keep it clean and disinfected.


Repotting

I'll replant it right away.
First, prepare the new pot.
Place a net cut large enough to cover the hole in the bottom of the pot.


Next, add enough gravel to cover the bottom of the pot.

Fill the new pot about one-third full with soil.
Now the new pot is ready.

Remove any decorative stones from the old pot.

Remove the cherry tree from the pot while firmly supporting the base.

Like this, the roots were densely packed all over the pot!

Gently loosen the soil and remove the old soil.
At this point, discard any roots that fall off.
Remove any blackened roots as they are rotten.
The white parts are healthy roots.
At this point, cut off any overgrown roots.
Make sure it is long enough to fit into the new pot.

Once you have removed the old soil and cleaned the roots, it's time for a new pot.
Adjust the amount of soil so that the base of the cherry tree is about 2 cm below the edge of the pot.

Once you have decided on the height, fill the soil around the roots.
Add the soil little by little, poking it with chopsticks as you go.
This will allow the soil to be distributed evenly among the roots.
Once you have added the soil, check to make sure the cherry blossom tree is properly secured.
If it still feels shaky at this point, add more soil while poking it with chopsticks again.
Once you have finished repotting, give it a final watering.
Keep rinsing until the water running from the bottom of the pot becomes clear.
This is how the repotting is done!

Cherry bonsai replanting completed

It would be even better if you had decorative stones or moss to cover the soil.
After repotting, keep the plant under an eave where it will not be exposed to cold winds.
Do not fertilize for one month after repotting.
Now, will it bloom beautiful flowers again?
I would like to continue watching over it.
For more information on repotting cherry bonsai, please see YouTube hanna CHANNEL
You can also watch the video.


Author: Nakanishi Edited by: Suzuki and Kambara

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