Simon: As Kitsune mentions, autumn is approaching, and it is
about time for deciduous trees to start dropping their leaves.
That may be all that is happening.
However, I suspect more problems. You specifically
mentioned immersion watering. Bonsai sold by mass merchandisers
often have specific directions to water this way. While
immersion won't hurt when done occasionally (indeed, it can be a
good practice once in a while), it causes health problems for the
tree when done routinely. This is because watering by immersion
causes soil compaction and robs the soil of air which is a
necessary component. Eventually you cause a moist, anaerobic
environment just perfect for the development of all sorts of
nasties like the fungi which cause root rot.
Does your bonsai have gravel glued to its soil surface?
If so, remove the glue and gravel layer and replace with a loose
mix bonsai soil. The glued-on-gravel's function is to prevent the
soil from being knocked out of the container during shipping, and
like many things in life, it actually becomes harmful once its
purpose has been fulfilled.
Grow your Zelkova outdoors if at all possible. It needs
conditions of light, humidity and air circulation that are very
difficult and expensive to provide indoors.

Alan Walker
http://bonsai-bci.com http://LCBSBonsai.org


-----Original Message-----
--- Simon Taylor wrote:
I have a Chinese Elm (Zelkova), I have had this about 4 weeks and
now the leaves are turning yellow and dropping what am I doing
wrong?

I have been immersion watering everyother day and spraying the
leaves top of the soil alternate days?

Am I killing my tree??
Many Thanks
Simon
==============
Simon,
Tell us where you live and whether you are keeping the tree
indoors or out doors.

Chances are, if you are in the northern hemisphere, the tree is
celebrating fall, and losing leaves is natural if kept outside.
Kitsune Miko

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