Repotted Kishu in 1 Part Akadama, 1 Part Kanuma, 1 Part Lava

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I just repotted my Kishu Shimpaku in 1 part Akadama, 1 part Kanuma, 1 part Lava. It was in 100% akadama. I just wanted to make sure that using the 1 part Kanuma didn't add too much acid to the soil. Is this a good soil mix, or should I repot it swapping out the Kanuma with pumice. I've included a photo of my Kishu. Thanks for the help in advance!
 

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Bonsai Nut

Nuttier than your average Nut
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You should be fine. Most trees prefer soil pH to be at least a little acidic, and it is typically better to be on the acidic side than the alkaline side (within reason, of course). I wouldn't be surprised if you find your tree doing BETTER in that mix than in 100% akadama.

For what it's worth, my kishus are all in 100% pumice, but they absolutely require acid fertilizer in that mix.
 
Messages
40
Reaction score
10
Location
North GA
USDA Zone
8
You should be fine. Most trees prefer soil pH to be at least a little acidic, and it is typically better to be on the acidic side than the alkaline side (within reason, of course). I wouldn't be surprised if you find your tree doing BETTER in that mix than in 100% akadama.

For what it's worth, my kishus are all in 100% pumice, but they absolutely require acid fertilizer in that mix.
Thanks for the reply and information. Coming from you, your reassurance does provide me with peace of mind! I didn't know if I had been too complicated by using the kanuma in my mixture, when I usually just use Boon's mix. Thanks again!
 

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