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Name: Jonquil
Status: other
Age: 30s
Location: N/A
Country: N/A
Date: 2/13/2004
Question:
I have a yellow lichen on the bark of my walnut trees and want to know if it is killing my tree?It seems to be spreading all over the branches and trunk?

Replies:
Lichens growning on the surface of bark do not harm trees. Lichens are unique partenerships of an algae and a fungus. They grow on many different surfaces, including bare rock. This web site is an introduction:

http://www.lichen.com/

J. Elliott

No, lichens rarely are agents of death of trees. Most likely, there are other problems contributing to the decline of your trees. The following should be helpful:

http://www.aces.edu/department/ipm/lichens.htm

http://forestry.about.com/bldisex.htm

Anthony Brach Ph.D.


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