Woolly Adelgid Problem Quest. ? (live outside of Boston)
Hello:
Regarding the woolly adelgid problem on Hemlock trees:
Live outside of Boston.
Very confused over when the "best" time to spray is.
Spoke to a few arborists that do this, but i have the feeling they have a
stock answer that
the best time seems to be whenever one calls them.
Might someone please summarize for me when I should have spraying done, and
what treatment (oil, soap, type, etc. ), when in the year ?
Is the above answer different if one sees no problem, but wants to prevent
one, vs
the belief that there is already a problem.
Much thanks,
Bob
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