Hemlock Woolly Adelgid

If you see white cottony balls on your Canadian or Carolinian Hemlock (looks like hail when snow is months away) then you have the adelgid.  This strange pest has been devastating Hemlock groves and landscapes in Massachusetts for years.  The second generation is active during the winter when horticultural oils or systemic pesticides cannot be applied.

Many folks call us to say, “I may have that Hemlock ‘disease’”, when it is actually an insect – the Woolly Adelgid.  Call Bug Busters Inc.  at 781 320-9800 if you suspect this pest is present so we can assess the level of damage.


  • White Cottony balls on Hemlock
  • Light green or gray appearance on needles
  • Needle drop and thinning crown