kate wrote:
D. Staples wrote:



Natural control factors generally bring outbreak populations under
control after one season. As noted, sanitation under the stems through
out the summer will reduce or destroy the population.

What does that mean, sanitation under the stems? Keep clear of pine
needles under the tree?

Kate
They pupate in the debris under the tree they were in, clean up the
debris, or if your into nasty garden chemicals poison the debris, and
it can reduce the populations from generation to generation.