Friday, June 3, 2011

June 3 - Carolina Hemlock - Tsuga caroliniana

Carolina Hemlock that has the Hemlock Wooly Adelgid living on it.
New spring growth on another Carolina Hemlock that does not have the Hemlock Wooly Adelgid living in it's branches. 
The Hemlock Wooly Adelgid is living on this Carolina Hemlock.  The Hemlock Wooly Adelgid is native to Asia and came to the Southern Appalachians in the 1950's.  This adelgid lives and breeds unchecked as this species has no predator in this part of the world.  The adelgid is sucking the sap out of the hemlock trees and causing them to die.  You can tell when a Hemlock has an infestation of the Hemlock Wooly Adelgid for it has white patches of a wooly substance which is actually what the Adelgid wraps their eggs in.

There is research going on in how to stop this infestation.  There are different methods being used and studied.  You can read more at

1 comment:

  1. I saw the Hemlock Wooly Adelgid in a state park in Tennessee. The trees were so stressed out that they were open to a multitude of other pests, spittle bugs, mites, that they would have been able to keep in check under normal circumstances. I saw a solitary egg of a lacewing. I wish there had been more.