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Need help understanding soil mixes

  • nboisvert
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Replied by nboisvert on topic Need help understanding soil mixes

Posted 3 years 10 months ago #66558
The trees I have at the moment are living indoor until I move to the house, I’m planning on moving them outside maybe. I will watering them quite often as I will be home all day. From what I read, on hot days it is better to water before sunrise and before sunset, and for less hot days only before sunrise. Of course, depending on how dry the soil is, I know it’s not a magic formula

It is not that hard to find Akadama here and not overprice, there is a canadian bonsai shop online here that sells it at a reasonable price.

What I understand is, finding the best soil for a given clinate/tree is a science in itself. I don’t mind trying different soil but I guess that repotting too frequently with different soil might end up killing the tree isn’t it?
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  • persimmon
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Replied by persimmon on topic Need help understanding soil mixes

Posted 3 years 10 months ago #66564
The best way to kill bonsai is to keep them indoors. If your trees die, don't be surprised.

Watering schedules don't work. You water a tree when it gets dry. Rain water is the best thing that can happen to a tree, so I will not compete with that. Also, sometimes we have humid nights, so the soil remains moist. If I'm not sure if a tree needs water, I stick my finger in the soil: if it feels wet, I will not give more water... As I mentioned in my earlier post, I use a soil mix of akadama & kiryu, which change color when wet, so most of the time I keep my fingers clean. But, if I'm not sure, I stick my finger in the soil and figure it out.
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  • nboisvert
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Posted 3 years 10 months ago #66565
I understand about the part where you say that keeping bonsai indoors kills them. But at a lot of place, Ficus are told to be indoor bonsais as long as they have good sunlight. I understand that in theory it is not best, but as far as I understand, some are more tolerant to being indoors than other.

Might be completely wrong here, I'm trying to synthetise all the information I get.
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  • persimmon
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Replied by persimmon on topic Need help understanding soil mixes

Posted 3 years 10 months ago #66567
You mentioned you have a juniper. Of your plants, that is the one to focus on, but it will die indoors. Ficus does thrive indoors, but to get it look like a bonsai is highly untrivial. If you want some more relevant comments, post pictures.
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  • Tropfrog
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Replied by Tropfrog on topic Need help understanding soil mixes

Posted 3 years 10 months ago #66569
What the producers of commercial bonsai trees meen when they say indoor trees is trees that are less hardy and need some protection in the winter. Those trees are grown inside temperature and humidity controlled greenhouses. Not on windowsills in central heated house.

Yes, ficus is one of the species that can survive indoors in our homes for quite a while. But making a tree barelly survive is just not good enough to make a good bonsai. They need to thrive. So as soon as you have an outdoor space look for species hardy to your area and keep them outside all year. You will newer look back to indoor plants again, at least not until you have a frost free room full with plant lights.
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  • nboisvert
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Replied by nboisvert on topic Need help understanding soil mixes

Posted 3 years 10 months ago #66572
Oh yeah sure sorry for that, didn't thought you were talking of the juniper... Yeah I'm aware of that, but is he better inside or outside at -10 in average? It's a pretty small one that I bought as is. I should've send picture way before...

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Ficuses:
Left one is dying (no way!?), has a soil mixutre of akadama, lava rock, pumice and potting mix (maybe a bad ratio of potting mix as it still wet since last time a watered it a week ago
Right one seems ok, has a the original potting soil it had plus some lava rocks on top
Both are standing in front a window normally, I moved them so you can clearly see them

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Portulacaria:
Started losing his leaves due to overwater, I took it out, let it dry and repotted, now it's growing small healthy leaves again

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Juniper:
Bought as is, watered when soil is dry. It's developing brown leaves, not sure why.

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Alberta Spruce:
Mix of Akadama, pumice, lava rock and some (not that much) potting soil. Will be moving outside as soon as weather allows it. I know its shape is weird, I'm not completely about what to do with it
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Posted 3 years 10 months ago #66577

Tropfrog wrote: You will newer look back to indoor plants again, at least not until you have a frost free room full with plant lights.


My exact plan for when I move to the house, I will a cold room where I will set lots of growth light to handle that canadian winter. Otherwise they will all go to the backyard.
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Posted 3 years 10 months ago #66578
For junipers winter of -10 is better than winter of +20. You cannot put it straight out now as hasent got used to the situation gradually. That is catch 22. Inside it will die, putting it outside now and it will die as well. The best you can do now is to give it a period of as cold as possible but not below 0. In spring put it outside and never take it inside again.
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  • Rorror
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Posted 3 years 10 months ago #66582

It's developing brown leaves, not sure why.


It is browning because it is indoor. The air indoor is to dry. This will continue to happen.
At the point when you think the juniper has died. Then it is actually dead for at least 2 or 3months.
So if the browning continues in the comming weeks.. i might already be dead. Sorry.
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  • Ivan Mann
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Posted 3 years 10 months ago #66605
My ficus is about 22 years old and has been outdoors from about March to about November and indoors Nov - March. It soaks up the sunshine and is continually outgrowing its pot.

When temps are dropping below 50F/10C more than two nights in a row, it comes in and stays, or if temps drop a lot lower than that. Spring time it goes out when it looks like the cold nights are over. Watering is a chore because I have to pour a lot in and then catch the runoff. The current pot is about 2 feet/ 2/3 meter and I can't find anything to put under it so I have to guess where the water will run off to and have a large cup under it.

It doesn't do real well inside. The first thing it does is drop about 1/3 of its leaves and then over another month or so another 1/3 drop. 20 years ago i worried about it. Now it is just the cycle.

Ficus and others can do OK inside, but only OK. If I were in a more northern area I would probably look at grow lights to replace the lost sunlight.
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