Feb 28, 2025 · The Idaho pumice is much whiter than the pumice I purchased from Bonsai Jack a couple years ago (and whiter than the pumice I purchased locally when I lived in Seattle). 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.

Jun 22, 2014 · I have been reading a lot here about akadama, Turface MVP, and pumice. Lots of opinions have been expressed. About a year ago I put equal volumes of each material in separate plastic jars and put them under my deck in the shade in central Oregon. I opened them today, June 21, 2014. Photos are attached; akadama, pumice, turface in order left to ...

May 4, 2018 · Pumice, Lava, scoria are some of the terms used to describe inorganic substances of volcanic origin. They vary by density, color, element composition, vesicle size, water retention capacity. If you want to go through the technical information just google the " CANLAVA" website.

May 4, 2020 · When I lived on the West Coast, I truly used garbage can loads of pumice. However, after years of experimenting, my best results were never with 100% pumice. (1) First, piece size was important. I was careful to sift all my pumice, toss the fines, and keep the small pieces for smaller bonsai or small trees in development.

Apr 15, 2019 · As most of us know, pumice can often be a great part of a soil mix, but it can sometimes be hard to find locally. I've found a local, cheap source for pumice - Dry Stall. It's been mentioned in the forums before, but I wanted to share some more details about it. Dry Stall is sold in 40 pound bags. It looks like this: View attachment 237501

Jan 14, 2014 · pumice 15 7-7.5 low Kanuma 62 6.4 high Turface 33 n med

Jan 22, 2022 · The color is very muted and the particle size is nicely aligned with Akadama, Kanuma, and Kiryu particles. A lot of US pumice can be very white and obnoxious at times. The US particle sizes are variable so I wind up with pumice particles too big or too small compared to the akadama particles even when screening.

Jan 17, 2013 · Currently I use a mix of akadama, pumice, and kiryu with a little charcoal and sphagnum mixed in. That said I've seen first hand the advanced feeder root growth that 100% pumice creates for growers out in oregon. Why wouldn't we want to use 100% pumice for all our bonsai soil now that akadama...

Dec 3, 2014 · Pumice and scoria are differentiated by density alone - pumice is less dense than water and scoria is more dense. They are both volcanic glass (no or very few minerals). Scoria tends to be more common with more mafic (higher iron and magnesium) volcanoes, but other than that and the density, they are quite similar.

Feb 14, 2024 · Mixing with pumice makes sense, since pumice is much lighter and for big heavy trees it makes moving stuff a bit easier. Of course, when talking about inorganic substrate and how much water it holds or not take into consideration that you cannot discuss it in isolation from watering - how much, how many times a day etc.