wrote in message
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I had one Willow die from this malady already. I have a second which
has now come down with the same problem. Namely, the bark at the bottom
of the trunk just comes off in hugh chunks about 1 or 2 feet long.

These trees are about 6-7 years old.

I'd hate to lose the second one, which is now about 25 feet in height.

Anyone have any idea as to what causes this?

It's usually deer, in UK at least.

Mary