QuintinBonsai
Chumono
I know that the purpose of the colander is to provide aeration to the roots, and allow good drainage. So what is the purpose of placing that colander into another larger colander?
As the point of screen pots / pond baskets / strainers etc is "air pruning" the roots. I don't get the point of the double stack. What you want is for the roots to hit the edge, have the tips die from touching the air and have the long roots "back bud" in to smaller feeder roots.
If you keep em in more soil with too large of a container or a double stack you are defeating this purpose IMHO.
As the point of screen pots / pond baskets / strainers etc is "air pruning" the roots. I don't get the point of the double stack. What you want is for the roots to hit the edge, have the tips die from touching the air and have the long roots "back bud" in to smaller feeder roots.
If you keep em in more soil with too large of a container or a double stack you are defeating this purpose IMHO.
That's what I was thinking. The Stone Lantern BT book doesn't give any explanation on doubling the colander. The only other thing I see is maybe to retain moisture? I've bought a couple of 1 gallon JBPs with the intent of growing them in colanders with fertilizer cakes as I've read. How do you guys manage keeping a colander from drying out?
Yes, the whole point of a mesh/colander/pond basket planter is for it to dry out as quickly as possible!!! It allows you to force feed the root system with water, nutrients, and air. This is why incredible growth is possible when proper care is taken. You should be watering twice a day(sometimes more as has been mentioned) if you are growing in 100% inorganic medium and one of these containers.