Thread: Borers in Picea
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Old 01-12-2004, 07:39 PM
Tony
 
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Default Borers in Picea

Hi:

I have found borers on a Picea (A. Nidiformis ... I think) that a friend
brought me a couple of weeks ago !!

I have read up all I could about it (including all of Nina's old posts) and
there seems to be little I can do to erradicate them.

Half of the tree is dead (the other half looks weak) so the bark flakes off
easily. There I have found some tunels under the bark. Some of them lead or
come from a sort of oval depressions. Some of them are blocked with resin as
the tree tried to fight this off. I can only find two probable entry points:
one is about 3 mm, the other 1 mm in diameter. In only one tunel I have
found evidence of being recent.

The question is:

Should I forget about this tree? Does the tree have a chance?

I know it is hard to say, but what does your experience tell? I don't even
know if these "miners" are active or not.

Some pictures at : http://es.pg.photos.yahoo.com/ph/ast...bum?.dir=/3d01

I don't know if I should worry much about borers spreading. I live in a
countryside where most trees of some age seem to be affected by borers and
flat-big headed larvae living beneath bark.

Regards,
Tony
Zone 10a