White Spots on Hemlock Tree - Knowledgebase Question

Coopersburg, PA
Avatar for witoslawski
Question by witoslawski
January 17, 1999
On my two Hemlock trees there are white spots on almost every branch. They seemed to spread from the bottom up. What is it and how do I stop it?

Answer from NGA
January 17, 1999
Based on your description it is difficult to give you a definite diagnosis of, or a solution to, the problem. However it is possible that your trees are suffering from hemlock wooly adelgid and, in some cases, horticultural oils can be used during the winter months to control this serious and potentially fatal insect pest. You might wish to contact your County Extension for a positive identification of the pest and any suggested means of its control. Their telephone number in Lehigh County is 391-9840.

You must be signed in before you can post questions or answers. Click here to join!

« Return to the Garden Knowledgebase Homepage

Member Login:

( No account? Join now! )

Today's site banner is by chhari55 and is called "Golden Sedum (Sedum adolphi)"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.