Scoria as a drainage layer at the bottom of Bonsai pots?

Reece · Post by **Reece** » July 5th, 2015, 2:03 pm

Good or bad idea?

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Post by **Bougy Fan** » July 5th, 2015, 2:44 pm

Why waste it at the bottom - why not use it in your mix ? Unless it is something like 10mm and is too big to go into the mix ? I use it and diatomite in my totally inorganic mix with very good results.

Gerard · Post by **Gerard** » July 5th, 2015, 3:00 pm

Great idea for grow pots, not so good for display pots. I have been potting all day and the ones with a scoria drainage layer in a large orchid pot have produced great roots.

Post by **kcpoole** » July 5th, 2015, 3:03 pm

I use it in my training pots to stop the diatomite mix coming out the holes

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Reece · Post by **Reece** » July 5th, 2015, 3:55 pm

Yeah I'm talking about the 10mm. I knew you could use it for grow pots. Just wasn't sure about bonsai pots.

Why not such a good idea Gerard?

I'm talking about just one 10mm layer before I put the diatomite and Zeolite mix in....

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Post by **kcpoole** » July 5th, 2015, 4:38 pm

Been proved that a drainage layer does nothing so better of just filling the entire pot wit u our preferred mix

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mountainman · Post by **mountainman** » July 5th, 2015, 4:47 pm

If it's 3-7ml, use through entire mix.If you use only a larger size above that and put on the bottom, all roots will go there,and because you start to get 'perched' water,you will get very thick roots.As in those mentioned with the orchids,which will then throw out your growing regime,as odd branches[related to the larger root's,]will grow more quickly than some of the other ones.It's all about balance.

Gerard · Post by **Gerard** » July 5th, 2015, 5:49 pm

I like shallow pots, sometimes a deeper pot for when a tree dries out too quickly in our hot summer. By the time a tree is ready for a display pot the need for a drainage layer has passed.

Reece · Post by **Reece** » July 5th, 2015, 6:22 pm

Ok this all makes sense now....

Thanks everyone!

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Andrew F · Post by **Andrew F** » July 5th, 2015, 6:40 pm

Reece wrote:Ok this all makes sense now....

Thanks everyone!

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Leong [bonsai south] sells a fairly small sized scoria if you are interested in trying it in a mix. The roots absolutely love it, its got great A.F.P.

Reece · Post by **Reece** » July 5th, 2015, 9:29 pm

Andrew F wrote:
Reece wrote:Ok this all makes sense now....

Thanks everyone!

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Leong [bonsai south] sells a fairly small sized scoria if you are interested in trying it in a mix. The roots absolutely love it, its got great A.F.P.

Ok sounds good....

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Elmar · Post by **Elmar** » July 5th, 2015, 10:01 pm

A.F.P...?

Cheers
EZ
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Pearcy001 · Post by **Pearcy001** » July 5th, 2015, 10:17 pm

Elmar wrote:A.F.P...?

Cheers
EZ
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Air-filled porosity I believe.
ie. How well the roots can breathe.

AusBonsai

Scoria as a drainage layer at the bottom of Bonsai pots?

Scoria as a drainage layer at the bottom of Bonsai pots?

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Re: Scoria as a drainage layer at the bottom of Bonsai pots?

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