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Old 21-Nov-2001   #2
bnsaijim
bonsaiTALK Master Craftsman
 
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Join Date: Sep-2001
Location: Gulf Coast
Country: Texas
USDA Zone: 8b-9
Posts: 772
Re: Root-over-rock from cutting

The usual procedure is to work with cuttings that are 3-4 years old that have been grown in tall planters filled with a porous mix to engourage long feeder roots. Obviously the size rock will determine the length roots required. One might also encourage roots to grow deeper through "bottom feeding"

Thicker roots can be edited in favor of the finer roots. The tree is then put over the rock then planted either in the ground or a large container to encourage root thickening. Roots are gradually exposed over a period of another few years.

Using tropicals might speed the process since they react much quicker to technique.
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