Why we don't use Akadama | The Bonsai Supply

[@deineath]

Thanks for addressing it, Jerome. I've had this question about your soil. Been using your soil in different trees over the past couple of years, and I gradually used it more often when I repot something from old akadama mix. I know there are many opinions out there, and people in my club are pro akadama but I got no complaints so far.

[@WeareTheBonsaiSupply]

Thank you so much Ali! I am very happy to hear that it is working well for you.:)

[@elbow6380]

I have a 7 month old ficus that was a cutting of 3 cm. Now its finger thick and absolutely huge already. Crazy roots. It grows in pure akadama. Indoor in Norway.

[@petercalbraith6226]

That was a really interesting video. As a novice I got into Bonsai 2 years ago at the start of the pandemic. Whilst there appears to be general consensus on tree styles, types and pot matching, the issue of ´soil mix’ seems to be the one which generates the widest difference of opinion amongst Bonsai enthusiasts. I have been very fortunate to have the guidance of a local Bonsai nursery in the North of England and, whilst they use some Akadama in their soil mix they also use Pine Bark and locally sourced Baked Expanded Clay.

[@WeareTheBonsaiSupply]

Thank you for your feedback Peter! It is very true, the Bonsai community is so divided on the soil topic when it should be more of an aha instead of a defense situation.

[@simongore29]

Hi Peter. Where is the UK expanded clay from? I'd like to try it

[@YouTubeisduke]

Locally sourced is the way to go. I do the same.

[@hawaiianstarman]

Here in South Africa’s Western Cape, where the climate is similar to San Diego, I use Akadama, along with Pumice and Coconut Fibre (1/3 each) for potting South Africa’s indigenous succulent plants. I add a very small amount of a slow-release cactus/succulent fertilizer. Plants respond quite well to the mix. I also repot every two to three years, and annually, add more slow-release fertilizer. Fresh/vital soil mixes require turnover. Otherwise, soil mix can become quite depleted leading to plant disease etc.

[@joegarland4885]

I like you have found Acadama tends to break down far to quickly, half way down the bag it is almost dust, when I sieve it I finish up with loads of dust which I can’t use and I have paid for. Thanks for making your video’s.

[@BonsaiSeika]

High quality akadama doesn't break easily. Look for the 3 line hard akadama. You will be thrilled when you see the root growth. Roots grow easily on outer part of the root ball but it is important to keep them ramified inside. Akadama is quite effective having a good root system in short time.

[@WeareTheBonsaiSupply]

Hi! I’ve used the triple line for many years. I’m not saying akadama is bad I just get better results with my own soil mixture 🙂

[@Jacob-yb6bv]

I used it once, that was that. Personally I tend to use a lot more actual peat based compost for my trees than most do. I cannot afford trees drying out at the rate they would with your mix or similar ones. Volcanic rock, perlite, grit and clay based cat litter (interchangeably depending what I have) as 1 part with one part compost. Often I’ll use more compost for trees which like to be damp or smaller pots and more of the aggregates for larger pots. Only problem is wet in the winter but my best trees go under cover. Whatever works. For me this does because I need to be able to leave trees for a few days even in summer.

[@raymondplodzien7459]

I have 3 trees that I recently repotted using akadama supplied by my bonsai club. My other trees have a mix. I will have to observe the differences over time. Thanks Jerome.

[@WeareTheBonsaiSupply]

Wonderful Raymond! Let us know the results :)

[@hobbydanalamlestari2144]

I agree with you, we hobbyists from Indonesia, rarely or not commonly use Akadama. We use our local product in the form of black volcanic soil mixed with other organic materials, such as rice husks, and the effect is amazing for plant health and growth.

[@YouTubeisduke]

I like that you commented. It's always nice to discover other countries soil usage choices. ❤

[@Darkfire1300]

Thanks for sharing your personal experiences. You are indeed a brave man! As Michael Hagadorn put it in Bonsai Heresy, talking about Akadama "...is a touchy thing in many places outside of Japan where strapping on body armor before entering the argumentative fray is considered wise, along with a cell phone to call for backup." I personally never liked the cost or "behavior" of akadama. I use pumice, scoria (volcanic grit), decomposed granite as my base. I can get all either free from the Idaho mountains or from the pumice mine less than 100 miles away. I might add Surface (calcined clay), pine bark and in a pinch sphagnum moss. I don't repot as frequent as many do and my trees do nicely. Its OK to take off the body armor now.....

[@jamesglenn520]

I live in the Treasure Valley where can I get pumice? I know where I can get the granite 👍

[@Darkfire1300]

You can get volcanic grit from the public cinder cone areas south of Boise.

[@jamesglenn520]

@@Darkfire1300 You mentioned a pumice mine so that is what I was referring to. I have not put pumice and cinder in the same category. I realize that they both are volcanic but thought they had different mineral content.

[@alessandromassimo5717]

I actually like the akadama for the fact that it brakes down, when you have very advanced trees after a couple years you get smaller internodes and smaller roots(they brake akadama and get smaller and smaller) the problem is that you have to repot but you have to repot anyways every 2-3 years. When you substitute akadama you need something with High CEC and in your case you use pine bark. I’d say that as long as the diameter of the grains is correct (small for shohin and refined, big for prebonsai and plants that need high vigor) every mix with some CEC, very airy, that prevents rotting is fine

[@samuilc8000]

It is break, not brake. I hesitate to correct spelling but I think you are confused. Hopefully no more.

[@alessandromassimo5717]

@@samuilc8000 yeah sorry english is my 4th language

[@samuilc8000]

@@alessandromassimo5717 Good! Now you know.

[@enkeledamolla1390]

Your soil mix its a success for my desert roses and I truly thank u for that😊

[@WeareTheBonsaiSupply]

Excellent!! 🙌🙌

[@ryanfitzalan8634]

Its good that we talk about this. Akadama is a specific Japanese horticultural component for Japanese Bonsai, and it doesn't make sense to ship it abroad as an absolute part of Bonsai. All the science behind Akadama is great and it is for sure the most amazing soil particle that cant be beat 1:1 with anything, but it is non-renewable and such a circumstantial thing to even exist that to become reliant on it for the art is irresponsible. It does also come with some inherent limitations that i think are detrimental overall to its rating as a good component. Different species work better in different mixtures; different local climates cause a diversity of weather erosion differences acting upon Akadama; and as mentioned- its guaranteed breakdown forces repotting, that if forced on a tree due to akadama breakdown at the wrong time in the year or in the trees health circumstances, can doom the tree to death. because of all this its wise to take some hints from interesting example of techniques. Dan Robinson doesn't repot at all, ever. while certainly a bit radical, his trees don't die and continue to thrive because root disruption is always risky and damaging to the most vital part of a tree. the balance of choice is: using akadama allows to produce that super refined form in a tree for at least a period of time but at the expense of more extensive care and careful health consideration and observation- more caution, meanwhile using Aggregates and fine Mulch allow for sustainable thriving trees that require less caution for potential repots with longer spans between them but at the expense of having a some refinement limitations. Just how significant the refinement differences are between developed trees in Japan and those in America, is probably arguable. it may be more a debate on short-term competitive perfection vrs timeless natural beauty.

[@CamunoBonsai]

Thank you for you video, I appreciated it. I use akadama only for mature shohin mixed with pumice, because it lets the soul drying most evenly. For chuhin I use only pumice and a bit of sand, about 10%.

[@bonsai_life_style]

Yep , I use similar to your and I find my trees grow much much faster then in eny other soil.

[@oscarmartin935]

wow!!! I was impressed with your video, you use the same mixture that I have used for a long time. I substitute the bark for a little hummus or peat moss. It has cost me a lot to convince people of this substrate because they are very purist in bonsai. I am 100% agree with you. A hug

[@jeffwatts4264]

great video , im a beginner by most standards (4 - 5 years) and im looking to find the most effective soil , so your explanation are very imformative thank you

[@yohaneskuswahyudi2484]

Thanks for totally new knowledge on using native media for bonsai. Yes I am the one have suffered a lot from buying Akadama. I now use pumice, lava grain (pasir malang) plus activated carbon ( burn husk) and brick grain.

[@WeareTheBonsaiSupply]

Excellent! I’m glad I could help 🙂🌳

[@bigfunky4976]

Thanks for making this video. I’ve been done with akadama for a couple years. I only have one tree left to repot out of akadama. The drainage is awful.

[@granlex]

Im not the right person to comment sin e i have been doing this for 1 1/2 years. I have never purchased a bonsai tree but i have been turning young nursery trees/plants into bonsai. I know this will take years but im enjoying every moment. I have never been taught how to do it or care for plants but i have learned from watching your videos as well as other videos from people who have knowledge. I started doing everything wrong but have learned little by little. I started also using akadama mix and did not have much results, then again i did not know as much as i know now. But…when i found out about you and your product, i was happy to save some money. To be honest i switch simply to save some cash believing what you were saying. I can tell you that the plants that i have switch to have been thriving incredibly. I just repotted my large adenium arabicum which i had for 1 1/2 years in fast draining soil and switched her for your mix. Her caudex is about 8-9 inches and have been trying to multiply her branches. Let me tell you that here in Miami it rains a lot so i was constantly pulling her in and out so the soil would be able to dry. Hopefully she will flower which she never did before. So far im very happy with your mix. Thank you

[@DavidGuin1]

What are your ratios of your aggregates? 1 to 1?

[@jonathonp1965]

My figs go absolutely nuts with akadama, perlite and coir peat. My junipers (squamata) love it too. Elms not so much.

[@Jaydabaus]

In Germany it is kind of popular (at least for some and people on a budget) to use expanded clay, the brand is "Fibotherm". It doesn't break down and can be used in all kind of mix. I bought Akadama when I started Bonsai, but it's way too expensive, at least for my trees. Works good in the German climate though.

[@Blade200000]

yes i do the same. you mix it with coconut soil?

[@terrysavage5816]

Used Turface mvp in all my stuff. Never had any issues . I do mix in some pine bark and lava rock added some sharps via black or red granite.

[@creightonfreeman8059]

I've never used Akadama in my potting media mix. When I started bonsai many years ago I don't think it was even available here in the MidWest. I used Turface, shredded pine bark, and crushed granite (chicken grit) as the main ingredients. Turface, a fired clay particle, has become ridiculously expensive, so I started experimenting with clay particle kitty litter; some brands of it break down and turn to "concrete" much as you described the Akadama, but some seem to have firmer particles. More recently I started experimenting with a clay based SafetySorb meant for soaking up oil and chemical spills. It seems to work pretty well. The past few years I have bought 50 lb bags of lava rock from the home improvement store and crushed it with a sledge hammer into 1/4 inch particles (1 cm.), more or less. It is a lot of work but works great. Recently I have also experimented with perlite additions to the mix. For deciduous trees I will add some peat moss to the mix to aid moisture retention. The main advantage I see in pumice, lava rock, and perllite over crushed granite is lighter weight. Large pots filled with the clay particle, pine bark, crushed granite mix are extremely heavy. Lava, perlite, and pumice are much less dense and make a noticeable difference when lifting pots. Of courses if you only have small trees this doesn't matter much but if you like big trees like I do it is a big deal.

[@yoteslaya7296]

Please tell me you're not using perlite in your substrate

[@YouTubeisduke]

​@yoteslaya7296 why?

[@QuadDerrick]

gratulations, your the first big bonsai supplyers that tells the truth about akadama i seen. hope you make it. you deserve it after being lied to for 13 years.

[@johnnnyboo7105]

What ratios are you supposed to use? If we go with these instead of akadama

[@carpy1252]

Appreciate the tip, I have been concerned about using calcined clay as I heard it can break down into fine dust.

[@jackwilson9824]

tIt also stopped using Acadama after not likng the results after using it for the first time. I am still trying to find the right soil mixture. Thank you for telling us your soil contents. what turned e off about the Akadama is the cos and lack of results. Can you telll me where to order the lava and clay?

[@Dan-in-the-Wild]

Lack of availability drives me to use pine bark in place of akadama. In the upper Midwest, akadama is scarce. Pine bark and akadama couldn't be more different, yet they share very important attributes. You can grow trees without akadama, but I wouldn't grow a tree without a little pine bark in the mix. CEC, water storage and availability, particle size, sturdy host for microbial life, predictable PH. Huzzah for pine bark. Great video!

[@matshagstrom9839]

If akadama was not so expensive I would use it exclusively. Akadam has the perfect retention, ion exchange capacity, aeration qualities and has one of the best color changes from dry to wet. It needs to be sifted and the size particles determine how often soil should be replaced. Growing without organic soil has a lot of advantages. Without organic content you can water more often woo it root rot. I can’t just using it for all plants and for many I don’t use it at all. My go to soil for conifers is 95% medium/large pumice 5% coco coir per Eric Shrader experience/ments. Sone trees like Willows, wisteria and bald cypress stand in water and for these I use lots of organic material bc the roots don’t have the same need for air exposure. There’s a lot to take into consideration but to me particle size is just as important as content. Pot size, weather and watering schedules and also in the end probably more important than what’s in the soil. White pines got root rot so easily if over watered. For these I do not use large particle organic like bark. Doing so is a recipe for dying roots. In the end I think most people overwater and cutting back on that and letting our plants roots breath is probably the best thing we can do. When used correctly akadama does this really well. Look at what the best growers in the world use. In Japan it’s local and akadama has a long standing history. The Japanese are slow to change but also probably still the best in the world at growing healthy small trees in pots.

[@ScottTheExperimentalist]

For trees in early development, what are your thoughts on replacing the clay with fox farm ocean forest soil. My theory is the extra organic material will help young trees grow faster. Also I travel sometimes an can’t always water every day. Finally I live in coastal Southern California so weather is generally mild to warm

[@timdady4660]

Like most things in Bonsai the use of or not Akadama is subjective to what you feel is the best for your trees . In the Uk most main dealer bonsai suppliers all have there own version of what is the best soil and suggest there's is the best. I have bought from different suppliers, when you open the bag it has a high percentage of dust. I am trying out cat litter and pine bark with a little perlite and to keep the soil open horticultural grit. This is the first year of this mixture ,but so far all my re potted trees are doing well

[@GreenCanvasInteriorscape]

I noticed the spendy bags of it at the Bonsai club meetings for sale, was alarmed at its crushability. I use Turface with Styrofoam peanuts at the base of the pot with a self-watering wick, outstanding for my cactus, succulents, bonsai and many tropicals.

[@joshturner5165]

Wow, I can see your point. As the akadama breaks down it can fill in the small porous crevices of the lava rock. Also, I'm sure that the sharpness OF the lava rock scrapes against the Akadama causing breakdown and causing clogged lava rock. Good points.

[@bulebonsaibatam1758]

Tried Akadama as well a few times. Wasn’t happy as my soils stayed way to wet and my pots clogged up. I’m a big fan of lava/pumice/perlite mix. Zone 13 Indonesia.

[@Mbxoom]

Can use it in regular gardening large trees

[@MrREPTILIO]

Thank´s for te tip bro .. it´s so interesting, i´m going to prove it 👍👍👍👍👍👍

[@AabetSaputra27]

Saya sangat setuju pendapat anda, walaupun pada awal nya bonsai berasal dari cina dan populer di jepang, tapi kita bisa membentuk bonsai dari negara kita sendiri dimana sumber daya dan bahan baku untuk bonsai bisa menyesuai kan dimana kita tinggal, jadi kenapa kita harus mencari kesana.😊

[@kylepurvis6231]

Hey Jerome, Brave man you are to take on this topic- it’s a controversial one for sure. I have been working to put together a soil mix that works in my climate, coastal South Carolina, super humid and very wet thru the summer and fall, the first 3 years I was here my trees struggled with to much water retention no matter what I put them in. Two years ago I was introduced to expanded shale, by the guys at Underhill Bonsai. I have substituted this now for akadama in my soil mix and it has worked beautifully, providing nice ion exchange, but is super stabile, and provides great drainage to prevent water logging. Only down side to it is it is heavy, so big trees can be rough on the back to move around. Nice video explanation, brave man ! Cheers!

[@WeareTheBonsaiSupply]

Thank you Kyle! I believe one can say anything they like as long as it is in a respectable way and has proven results. You’d be surprised to hear that in Thailand lots of bonsai artists use dried leaves as soil.

[@kylepurvis6231]

I believe it, you! You use what ya have available that works for your specific situation.

[@Crootcovitz]

@@WeareTheBonsaiSupply That's interesting to know. I was thinking about experimenting with used black tea leaves to add to soil once I get my hands on Camelia sinensis. It seems to be bit funny and interesting thing to try. 😀

[@dirtysouthhc2936]

I want hundred percent agree I live in East Tennessee in akadama especially in smaller pots it's just not going to get the oxygen and water and mush . The same plant I will pour water in through the top two years ago and would drain free instantly now seems to be so broken down it takes forever to get any watering in

[@getintothewildwithjeffruma8777]

What is your opinion of TURFACE?

[@WeareTheBonsaiSupply]

I actually like it but only when it is used as an additive and only in small quantity

[@uunz4435]

Nice video !

[@TheBonsaiGarden]

This is very brave of you Jerome 😁👏👏. In the UK many of the more “experienced” growers are almost cult-like or even perhaps blinkered or misguided in their use of Akadama. My personal experience (particularly of pure Akadama) has been that it can dry out very, very quickly, particularly with shohin trees in smaller pots and requires watering every couple of hours in warmer weather. At the very least my experience is that it needs to be mixed with something organic. Also not a fan of how it degrades to a solid brick over time. I personally prefer to use a moler clay (same as calcined clay? available as certain brands of cat litter in the UK or safety absorbent for oil spills) with perlite. I also like to use agricultural sand or grit and a small element of regular compost in my mix since this makes the mix free draining and porous whilst holding pockets of water, but is very much more forgiving and not wholly inorganic. I get great root development so it appears to be working as I need in my own temperate climate, in the UK. I would not however claim to have any very mature, highly refined show stopper trees. Akadama is Japanese soil which means it has a certain mystique and prestige perhaps allowing some to think that because bonsai originates in Japan and they are using Japanese soil that they are bonsai elites. The Japanese use it because it is local, and suits their growing climate and native trees. If there are other products which have similar properties and benefits locally then why would you NOT use them? I would say that the obsession with the exact or correct soil mix is misguided. And talking in absolutes a little foolish. In nature trees grow in all sorts of different soils. The key is to know the properties of the various ingredients and aggregates you are mixing, and what they bring to the mix. Worrying about exact proportions is also a bit silly since this is not an exact science. Whether you mix a third or a quarter of a particular element is unlikely to give very significant results.

[@LizMcNamara47]

Could you let us in on the kitty litter brand please?

[@TheBonsaiGarden]

@@LizMcNamara47 Either Kitty Friend from Pets at Home (in a 30ltr bag for about £15) or Tesco Low Dust Non Clumping (in a bag about 8ltr for about £5). The cat litter must be terracotta in colour. Anything else has the wrong properties and will likely break down with water and clump together.

[@WeareTheBonsaiSupply]

Hey Jason! Yes, of course I have to be brave for all of us non Akadama users, lol! When using kitty litter you have to be careful not to use the kind that has chemicals. That is exactly right, it is local and so they use local soils which makes a lot of sense for them.

[@WeareTheBonsaiSupply]

@@LizMcNamara47 I do not use Kitty litter, instead I use Calcined clay which you can find here. thebonsaisupply.com/collections/bonsai-soil

[@WeareTheBonsaiSupply]

@@TheBonsaiGarden As long as you are using Kitty litter that does not have chemicals.:)

[@Jakub_Andrzejewski]

Hi, good video. I'm located in Europe and I use domestic plants and domestic soil.

[@robertlefler6644]

I totally get it. It’s hit or miss when I get a new bag of akadama. When I do get a good bag, I’ll usually save it for shohin . It does well for me up here in Virginia. I’m definitely gonna look into the calcined clay though. Thanks for your videos, it’s all good.

[@pokemonmagic.]

this is an amazing video 👍

[@WeareTheBonsaiSupply]

Thank you so much!

[@pokemonmagic.]

not a problem, happy to give my opinion to you guys.

[@thetruthchannel7073]

Can I substitute akadama for potting grit thank

[@henzobonsai]

Nice sharing bro..👏👏

[@nicoseb]

Interresting video. Do you know chabasite zeolite ? I use with pumice .

[@edgarcano7911]

Do you recommend using turface?

[@michaelcowart6100]

I agree Jerome. We don't need akadama. It breaks down far too quickly causing all of the issues you mentioned.

[@WeareTheBonsaiSupply]

Thank you Michael!

[@elsonsti]

its basically clay soil after breaking down

[@cortbrailey5116]

Great video do you think this mix will work well with lophophora williamsii (Cactus) 🌵

[@WeareTheBonsaiSupply]

That would work very wel

[@Brechozinho]

Hello, thanks for the lesson,

[@McFennec]

Interesting video, personally I use a mix of lava rock, pomice and zeolite and with the calcareous water work great.

[@gabrielsuarez4803]

you said based on your plants and weather. What would suggest for tropical plants like Brazilian rain trees in south Florida?

[@WeareTheBonsaiSupply]

I would use our soil for that. I grew all my Tropicals in that mix when I lived in Florida and they did excellent! Here is the link to the website: thebonsaisupply.com/collections/bonsai-soil

[@VanDamArtisan]

I'd rather take your opinion than blindly using whatever is in the text book. I think tree care needs to be altered depending on location, climate, etc. My climate is very dry so I have to trap more moisture than normal, so I tend to use some peat mixed in and gravel in a water tray under the pot, which could cause root rot in Florida or Georgia, I'm sure. Anyways, good video!

[@carolficorilli9768]

I am new to this and I have been using bonsai supply bonsai soil. I am due to get a 13 year old Fukien tree this week from Florida and what if the Nursery I am getting it from has used organic soil? Do I wait for springtime to check it? And repot if the roots are overly big?

[@WeareTheBonsaiSupply]

Hi Carol! Thank you for all your support! Since Fukien Tea is a Tropical tree, I would repot it in the Summer time, when it is nice and hot. You can wash out all of the black soil and go directly into our All purpose bonsai soil mix.

[@tomekeziowski4293]

What do you use for trees, which needs alkaline soil?

[@WeareTheBonsaiSupply]

Same soil! It works just fine.

[@nsolanoc.]

Yo vivo en Barranquilla, Colombia. El clima es muy caluroso la mayor parte del año y viajo mucho, por lo que uso compost + gravilla de río + cascarilla de arroz en partes iguales y no he tenido inconvenientes con esta mezcla.

[@mehranashkanian2747]

At what ratio you make your mixture ?

[@ricbethsbonsai638]

Hey thanks, I never use this in Puerto Rico, I'm use fine river rock of the sand and a little portion of earth and work perfect in my ficus and junipers

[@1Mutton1]

I only just started using acadama and was really surprised how quickly it started breaking down.....within weeks it was soft.

[@mauroa.4993]

Great informative video thank you. What do you recommend specifically for indoor Bonsai soil mix (I have a Ficus Retusa, Chinese Privet and a Fukien tree)? Your Universal Bonsai Soil Mix?

[@karinpetersen8330]

With what can you chance clay?

[@kendallmallon1763]

I've just started trying akadama, it seems to be working really well for my Englemann Spruce, larch, and Giant Sequoia. I am growing out other deciduous in pond baskets right now, so don't really have experience with it there... I haven't used it with Pines or Junipers yet

[@yoteslaya7296]

It does just fine with pines and juniper

[@bluerockcomputingllc4143]

Dude, very interesting. Thanks for posting experience that goes against the grain. Taking your experiences with Akadama into serious consideration.

[@nancyatkinson4253]

When you use pine bark, is it fine or just regular cheap pine bark? And do you sift it at all? Thanks I enjoy your videos. Nancy

[@WeareTheBonsaiSupply]

Hey Nancy! It is sifted pine bark chips, no 🪵. Check it out here: thebonsaisupply.com/products/pine-bark

[@sjoer]

I generally use perlite, compost, coco, volcanic rock and some clay. For fertilizer I use cow dung pellets with an added source of calcium (usually from my water boiler or from the sewage treatment plant in town).

[@sjoer]

Cat litter makes great clay ;)

[@bushidowarrior2891]

Where do you get your calcined clay? I have tried using using Turface but is a waste of money and aggregate size is very small. Any help you can provide is appreciated.

[@mrscotchguy]

You can get Safe T Sorb which has larger particle size and is less expensive. I purchase it at Tractor Supply. Turface is available in bulk from a local grass seed and feed store.

[@WeareTheBonsaiSupply]

Hey Bushido, You can find it here thebonsaisupply.com/collections/bonsai-soil

[@tinjoesstation]

Great video. I use pumice, turface, and pine fines. Sometimes lava rock when I can get it at my local shops.

[@yoteslaya7296]

People still use turface? Wow...

[@tinjoesstation]

@@yoteslaya7296 Yep Old Greg, different strokes for different folks.

[@SussexIan]

Hi Jerome, great video and thanks for sharing. What mix would you recommend for the South coast of England (dry summers, warm wet winters) Thanks.

[@bonsaigrounds]

Akadama is the best 👍🏼😀

[@jdutton24]

what brand calcined clay?

[@vlozity]

what is a good pine bark substitute for the tropics where pine bark is not available?

[@yoteslaya7296]

You don't even need pine bark in the tropics

[@diveparis]

have you ever tried biochar or wood ash?

[@WeareTheBonsaiSupply]

I have not. Doing research on both products I have not been convinced that either was good. Pine bark has lots more nutritional value and other benefits such as fertilizer up sorption etc.

[@natrjack965]

Thank you for the advice. As a beginner I'm trying to get as much knowledge from watching videos and I found your video very interesting. I too do not use acadama. It's overrated and overpriced. I use molar, clay, pine, bark, and pumice

[@fabian_ajib]

Is the calcined clay same as brick? Or the calcined clay u use is from calcinizing clay and limenstone?

[@JodyGrogu]

Hi Jerome, I see that the particle size is larger than average. Can you make a (short) video and then explain why you chose that size. What I usually see is a smaller particle size. In the Netherlands (Europe) where I live, the larger size is often not used. I want to use a similar soil mix as your universal soil mix, but I am unsure about particle size.

[@andy5771]

Hallo Jerome, ich schreib in deutsch wenn das ok ist. Ich bin noch nicht lang dabei und mein Substrat mich ich erst seit etwas über einem Jahr selber unter anderem auch Akadama. Was ich jetzt aber schon feststellen musste,es zerfällt unglaublich schnell,genau wie du es beschrieben hast. Nichtmal ein Jahrund jetzt muss ich leider wieder umtopfen,was mir gar nicht gefällt. Ich hab hab noch einen Sack davon da,den brauch ich noch auf,war ja auch teuer,aber dann werde ich mich davon trennen. Preis Leistung passt gar nicht. Kann nur zu 100% deiner Meinung zustimmen und werde deinen mix anstreben zumindest mal testen. Verspreche mir viel mehr davon weil deine Erfahrungen und Ergebnisse sprechen ja voll dafür. Bin froh das ein Profi es genau so sieht wie ich als blutiger Anfänger 🙈😅. Alles gute für dich und bis zum nächsten Video🙋🏻‍♂️

[@andreasweber1533]

Bist Du in Deutschland? Lava-Mulch und Pinienrinde sind hier einfach zu kriegen, ich misch' dann 1+1+1 mit Seramis Tongranulat (die noch billigere Lösung ist Fibotherm Trockenschüttung statt Seramis).

[@andy5771]

@@andreasweber1533 Ja bin in Deutschland. Hab immer Akadama Lava Bims und Kokos zu gleichen Teilen gemischt. Werd wie gesagt das Akadama weg lassen. Fibotherm hatte ich auch gemischt,hat ziemlich gut funktioniert bis auf das es immer so leicht aufschwimmt,im Gemisch mit Lava und Bims muss ich erst noch testen.

[@CharlieForeign]

Where can this clay be purchased at? Also how many clays are suitable for this purpose?

[@WeareTheBonsaiSupply]

Hi Charlie, you can get it right here: thebonsaisupply.com/collections/bonsai-soil

[@junarielpoblete4703]

Hello, I'm very grateful to watch your video and I learned a lot. May I ask your recommendation in soil mix especially in tropical areas? Thanks a lot.

[@JereCAustin]

I used 60/40/10 akadama/kanuma/tree bark. I tried Bonsai Supply mix and I get better results with the mix. I buy big bags of both sizes, can’t go wrong

[@jimstone4507]

The point of using akadama is that it is SUPPOSED to break down. IT adjusts to the aging cycle of the root mass allowing it to retain moisture. In a hot subtropical climate this is an excellent quality to have. Your mileage may vary, especially if you aren't mindfully watering your trees.

[@RolandObermeier]

While the one or other of us will well agree, BS has a valid point not to speak of the carbon footprint akadama leaves being transported from Japan into the world. Here in Germany I use instead of Akadama solutions like Fibotherm or similar clay based materials and must agree with the main point in the video....although, I don't have 13 years of experience yet.

[@andreasweber1533]

That's what the - locally sourced - pine bark is for (among other benefits it offers).

[@surfgreen60]

Other factors in favor of Akadama are its cationic exchange properties, and root bifurcation. I perceive the primary dissatisfaction with Akadama to be the cost. It is expensive, no question. The quality issues can be minimized by using Aoki Blend. It is even more expensive, but the quality is better in my experience. And I have found Akadama to be less important on trees in development. No need to spend the money on trees that aren't being refined in the pot. JMO, Jerome knows what works best for him and there is no question his mix will work.

[@andreasweber1533]

One of the benefits of organic materials like bark actually is their CEC (about 5..6 times that of akadama).

[@yoteslaya7296]

@@andreasweber1533 ya have fun when your organics break down and root rot shows up

[@nickhopes8821]

Understanding the structure of Akadama is key to understanding Akadama. The worlds best Bonsai that are highly ramified have been grown in Akadama. If you want highly refined trees with amazing ramification there is no substitute for it . But if you want to grow and develop trees then yes don’t use it. Once you get to the refinement stage you really do want to use Akadama .

[@WeareTheBonsaiSupply]

I get what you are saying. Just as an FYI some of the best bonsai trees in the world are grown in Asia and most of those bonsai masters do not have access or the means to pay for akadama, yet they create the most spectacular trees.

[@andreasweber1533]

Cost and availability may be one thing, but many growers simply have found materials or mixes they prefer by now. I'm pretty sure Walter Pall could have a truckload of akadama delivered to his garden, yet none of his indubitably world-class trees has akadama in its pot.

[@bobbymalta73]

Thanks For Sharing!

[@guidozuurbier3426]

Where do u get the clay from..?

[@vikkiroig464]

I have my first bonsai...a Tea Tree which I am told is difficult to grow. It seems to be in a dark soil with white things, guessing vermiculite or perlite. So I purchase from Japan Akadama, then from US a bag of Tinyroots aLL Purpose Blend Bonsai soil(double sifted pine bark, calcine clay, vermiculite, river sand, frit), and a bag of pumice. I want to put it in a slightly larger pot. VERY confused as to what of the items I bought to use. The Fukien is quite small at this time and I live in Florida...it is exposed to south indirect sun and humidity indoors only. Thank you.

[@WeareTheBonsaiSupply]

Hi Vikki! I suggest you book a one on one session to give you the best help/advice possible. thebonsaisupply.com/products/one-on-one-session-zoom

[@hfestion.]

One hundred cultivators bonsai to ask, you will get a hundred different opinions! Great video!

[@WeareTheBonsaiSupply]

💯🙌🙌

[@lovegardeningplants]

I am in Australia do you have the brands that you work with for Lava rock(size) Pumice (size) Pine bark (size) Calcite clay (size) thankyou we all love your work 😊

[@WeareTheBonsaiSupply]

I’m not sure what you mean by brands? We manufacture everything ourselves 🙂

[@lovegardeningplants]

Products if that makes sense.thankyou for the reply

[@lvorizza9017]

Hi jerome thanks for the sharing, i would say that a good presentations, well i am living in the place where extremly hot here in malaysia (asean) in my place we have 2 seasons which is dry and wet, ok talking about soil, in my mix i dont use akadama as part of my blend infact i have used just lava rock pumice and sifted to fine, pine bark( equal part) over years it seems work to all type of my tree with this climates.

[@Josy394]

Are akadama and mosato stone the same things??

[@WeareTheBonsaiSupply]

I never heard of mosato. Akadama is Japanese clay

[@magb123]

It all come down to what works best for you. Some people use Akadama have very good results. Know some people been growing bonsai for over 30 years who always use Akadama.

[@WeareTheBonsaiSupply]

Yup, it all comes down to the outcome of your trees ultimate happiness :)

[@paulmoney5243]

Few months ago I tried to repot a Carmona that was having some roots problems ,and I've noticed that brick situation you was talking about in this video. Unfortunately I was late and the bonsai died BUT I learned how akadama is a fuckin mess once it becames an old soil.

[@jrmonzoceramica]

wich proportion of each soil do you use? here un Spain I've never seen this small pine bark neither this tipe of Clay. But I'm also changing my soil to lava, pomice and then a mix of soils depending on the trece species

[@millardshires5425]

Someone asked and I didn't see a response. I would like to know, as well, what is your ratio of lava, pumice, pine bark (1/4") and calcined clay. Equal volumes or ?????

[@kunzangdordze9730]

Instead of akadama, I use a local marlstone. It also does break up with time, but it takes long time for it to break into dust, and it has quite a lot of minerals. Usually I use a mix of 1/4 of marlstone, 1/2 terramol (a kind of terracotta substrate, made in Denmark), 1/4 of perlite and 1/4 of organic substrate. It seem to work fine, though I mostly grow sub/tropical and succulent trees.

[@haidafella8651]

Terra cotta that is fired? Or just dried?

[@kunzangdordze9730]

@@haidafella8651 according to producer it is fired.

[@haidafella8651]

@@kunzangdordze9730 so what about just breaking up old clay pots?

[@paveljah]

I fell in love with coco fibre bricks from pet shop or grow shops. So wet, so airy and looks like miniaturised earth. You can mound it high to protect root-overs, you can grow seeds and cuttings in it, this year I will use it for air layers too. So far all the trees I repotted into it look better than ever.

[@Val0rG]

Where do you get your calcined clay? What brand?

[@raymonddeguara5678]

You can try cat litter,just make sure it is not the clumping type, cat litter is calcined clay

[@WeareTheBonsaiSupply]

This is what we use thebonsaisupply.com/collections/bonsai-soil

[@WeareTheBonsaiSupply]

@@raymonddeguara5678 As long as it isn't chemically treaded

[@MuhammadNurdinnewspecies]

I agree with you.. I don't know the quality of akadama in Japan, but same with you, the quality of akadama in my country is very bad. Plus in tropical countries like Indonesia, frequent rains make akadama destroyed faster