"Broadback" wrote in message
...
I have a number of small apple trees in my garden. The cox's orange pippin,
which is about 4 years old, has a vertical split about 30cm/9" long on its
trunk. Any ideas as to the cause, also what if anything I can do to help
the tree prosper, or will it not harm the tree?
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Have you had a thunderstorm in recent days? Sometimes lightening can cause
that kind of damage. I have a feeling that, in some cases, growing
conditions can also cause splitting. It would be easy to see how a period
of drought followed by torrential rain might cause rapid growth, which may
split the trunk. Does any of this ring bells with you?

Spider