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Borers
There are virtually hundreds of different kinds of
wood boring insects. Some are caterpillars of moths
or butterflies, some are larvae of beetles, some are
sawfly larvae, and still others are weevil grubs. Borer
damage is not caused by the adult itself but by the
larvae which bore into the phloem and cambium layers
after emerging from their eggs on the bark. The borers
tunneling weakens and kills trees by interrupting the
flow of sap. The entire life cycle of the borer is one
year from egg to beetle. Borers are attracted to trees
that are under some type of stress. Newly planted trees
should be properly watered and fertilised during the
first few years of growth to prevent any borer attack.
Healthy trees can drown borers by engulfing
them in sap.
Poking a piece of wire down the hole may kill the borers.
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