wilt is caused by the pinewood nematode, Bursaphelenchus
xylophilus, a microscopic (1 mm long), worm-like
animal, which is moved from infested to non-infested
pine trees by the pine sawyer beetle (Monochamus
spp.). (A Pine Sawyer Beetle Grub is shown photo
a pine dies suddenly, especially a Scots (Scotch) pine,
pine wilt is a leading suspect. Entire windbreaks or
plantings may be lost to pine wilt within a few years.
(photo below right)
is the most important management practice to prevent
or slow the spread of pine wilt. Currently, no chemicals
are available to control the nematode or the beetle.
To limit the spread of pine wilt to nearby healthy trees,
diseased trees must be removed and destroyed before
the beetles emerge from the wood.
DEAD TREES BY MAY 1
sawyers are inactive in winter, so if you find dead
trees after October 1, they do not need immediate removal,
but they must be removed and destroyed by May 1