Hemlock Woolly Adelgid
If trees do not have any Hemlock Woolly Adelgids on them at all, they do not need treating. However, if the infestation is very light, or if adjacent trees are infested……...https://www.ces.ncsu.edu/depts/ent/notes/O&T/trees/note119a/note119a.htm
Posted on Aug 9, 2010
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