Colanders and mesh; hold your roots!

So different size holes and different positioning (air; inside another colander; on the soil; in the soil) and we have different tools.
I can see the differences among techniques , but still not see the different purposes.

Sorce, as is often the case, is incorrect. Putting them in the ground or doubling them is pointless at best. The only difference in the "hole size" is the substrate size and thus the amount of oxygen in the soil and following that length of time until substrate is too dry.
 
Thanks, and I have that as knowledge source, great stuff, but still experimenting, I basically have raised the ground and added B.soil and walls. I get nervous with colanders come winter, but have changed that whole set-up from last winter and protection will be better.
 
@milehigh_7 ,

Clyde,

I believe if you read carefully through Bonsai Today 20,
the article with the guy doing small bonsai.
He explains the use of the double and triple colanders.

The J.b.pine when encouraged to grow through one colander
into another, encourages the surface roots to go coarse.
Males them enlarge and come to the surface.
[ please note and combine this information with what I further
state below ]

Also note, what was noticed is that the seed some
J.B.pines are more extreme as softwoods go.
Some pines have a much greater genetic disposition to trunk
enlargement and surface roots.
This is not mentioned in either B.T 12 or 20.
So unless you grow a good many J.B.pine seeds, you will never
actually see this happen.

A few of our pines grow branches to 30-36 inches and gain an
inch of trunk.
Others do the above and end up with pencil trunks.

I have left images of this in the Pine forum, a while ago.

The double / triple colander effect does not work on our
local hardwood, Caribbean / Honduran pine, by the way.
Hope this explains.
Good Day
Anthony

Even today still only pencil thick.

JBP 11.jpg
 
You may as long as you credit Vance. Otherwise you don't understand the patent process real well.
I am aware of Vance’s patent of his wood and screen wire containers. I believe the Bonsai Today article upon which the colanders technique is based was originally published in Japan before Vance’s patent.

Regardless of all that, the original purpose of growing in a colander was to produce a tight root ball close to the trunk so that the finished product would be able to be put in a Shohin pot.
 
Sorce, as is often the case, is incorrect. Putting them in the ground or doubling them is pointless at best. The only difference in the "hole siz

Find the rest of the cases....
And I'll eat you up on those too!

Put 2 pond baskets together....

Or better..

Befpre you remove one from the other at the store...look at the smaller hole size.

That way you aint gotta do any work....

You can just read about it like always...
And talk shit with no proof!

Sorce
 
Mile high..as often is the case....

Doesnt understand what I'm talking about!

My truth is always the truth even if you have another.

Sorce
 
Sifu [ @Adair M ]

the idea of colanders /wire mesh was known since at least the 50's
Printed in John Kiktavi;s book from the 50's.
Probably discovered in the 1800's at the time science
was coming into full swing.

As to colanders today --- evolution of use ----- or the Old American
idea used by Mike F. [ Gogeerah ], let the root escape
from the pot into the ground.

It's time for Bonsai growing evolution...................................
Good Day
Anthony
 
Cypress,

you see the Chinese and Indian variety of shapes in colanders
and sizes ------boggles the mind.:eek:
Good Day
Anthony
 
Cypress, you see the Chinese and Indian variety of shapes in colanders and sizes ------boggles the mind.:eek: Good Day Anthony
Oh, found one especially good for slip potting:
OXO-collapsible-colander.jpg
 
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