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Michael Hagedorn on 100% pumice soil | Bonsai Nut
I was using 50-50 pumice and lava, but the lava has to be sifted on site at a landscape supplier, while high-quality, bonsai-appropriate pumice is available "locally" (2 hours away) for only $23.50 for a 45-lb bag. So, due to my laziness, I've shifted the lava portion of my mixes to pumice. My pines have been extremely healthy in 100% pumice.
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https://www.bonsainut.com/threads/pumice-and-lava-…
Pumice and lava rock comparison - Bonsai Nut
How does lava and pumice compare as far as moisture retention, aeration, and CEC? I was thinking of only using one or the other along with akadama for next seasons repotting. I'm in favor of lava rock just because it looks nicer mixed with akadama than pumice does, but everyone was going...
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Pumice vs lava rock. | Bonsai Nut
Has anyone here used pumice stone as a medium? It looks similar to lava rock but seems more porous. Is it equivalent better or worse.
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Lava vs pumice vs leca soil test - Bonsai Nut
Clearly, pumice holds more water than the other two. Lava and leca are close, and have more air filled porosity. So if your pots are not holding enough water, add more pumice to the mix. If your pots are staying wet too long, add more lava to the mix. Leca is a pretty good material, more like lava than pumice in water holding and air holding ...
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Lava Rock vs Pumice - Bonsai Nut
Many forms of pumice are more porous and lighter than lava - hold more water than lava. Many forms of pumice can be crushed between your fingers. Others are pretty darn firm, more similar to what I think of as lava rock. From what I've seen of pumice and lava, I think there's a spectrum between the two.
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Do any of you keep your trees in 100% pumice? - Bonsai Nut
I normally do 100% DE, last season I tried pumice and really liked it. I was considering doing a 50/50 mix of DE and pumice for some JBPs. Would you that be just as good as 100% Pumice? Considering 100+ summers?
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https://www.bonsainut.com/threads/kiryu-soil.49006…
Kiryu Soil?? | Bonsai Nut
I have used both kiryu and european pumice for some time now, mixed with akadama and whatever else I have handy. I can tell you that kiryu and pumice are very similar in texture, weight, water retention and drainage properties. ç But Kiryu has one advantage, it changes colour drastically when wet, from off-white to orange-brown.
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Michael Hagedorn on 100% pumice soil | Page 2 | Bonsai Nut
Going back to pumice (and adding the possible confounding factors of pumice provenance), whenever people on the west coast (esp central valley and SW regions) report extremely rapid top-drying of pumice, I always wonder what their top dressing practices are, if any.
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Michael Hagedorn on 100% pumice soil | Page 3 | Bonsai Nut
The Idaho pumice is also 10% heavier, but that could be due to the aggregate size of the Idaho pumice being smaller and more uniform, and therefore there are smaller air pockets.
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https://www.bonsainut.com/threads/functional-diffe…
Functional difference between pumice and lava - Bonsai Nut
Obviously APL is a very common blend for bonsai soil, but I'm curious about the functional difference between pumice and lava in this mixture. In my understanding, it seems like they both provide pretty much the same functions: drainage, aeration, and preventing compaction. Additionally...