The Hemlock Woolly Adelgid (HWA) is a tiny, piercing and sucking insect, unseen with the naked eye that feeds on hemlock twigs at the bases of the needles. HWA is an
In our line of work, we have to treat different kinds of trees, some of which are easier to inject than others. Conifers are famously difficult trees to inject, due
The hemlock woolly adelgid (Adelges tsugae) is an insect native to Japan. It was first detected in the U.S. in Virginia early in the 1950s and now covers the entire
Conifers that retain their foliage also will retain systemically applied chemistries, such as imidacloprid. Hemlocks retain their foliage for 3 to 6 years. Researchers have evaluated the longevity of imidacloprid