How to kill a tree?

[Marti Rijken]

I hope planting trees gets as much attention as this thread, but
nevertheless I would like to share the following experience with you.

My father was annoyed by the multitude of roots in his lawn of his
favorite Prunus serrulata. A friend told him to put copper nails in
the roots to let them disappear. Well, he was right. The roots
disappeared... because the tree died after a few months...

Was my father just unlucky, or is copper really this bad for trees?
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   @..@    Marti Rijken   mrijken at inter.NL.net
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