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Some notes from Sandy's presentation:
- Select a hard, preferably dark-colored rock with
grooves in it, and a shoulder. (It is not natural to
plant directly on the top of a rock.) Lava rock is
unsuitable because a plant's roots will break it down
after a few years.
- Select a young plant, a two-year-old seedling, or
freshly separated air layering.
- Smear with muck the part of the rock that the roots
will contact, direct the roots into the grooves, and
cover the roots with a layer of muck.
- Attach the roots firmly to the rock using vinyl
electrician's tape. This will cause the roots to flatten
against the stone. If not under pressure, the roots will
stay round.
- Place the rock on soil in a deep container. Allow the
roots longer than the rock to penetrate the soil. Add
soil to cover the rock. Leave the rock buried for three
to five years, then gradually remove the soil to reveal
the roots clinging to the rock.(The rock and plant may be
buried in the ground instead of a container.)
- Wire the plant before you start or after a few years.
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