Question
Located in the Pacific Northwest. I have a 10 year old Diana Rose of Sharon growing as a tree in a container. For several years now the Lichen fungus has taken over. It stunts the leaves and flowers are few. I have tried to remove the lichen from the branches,just by picking but that doesn't do any good. What can I do about saving this tree?

I appreciate your suggestions.

Answer
Hello Judy,

I am sorry that you are having such difficulties.

However, the lichens are not causing the problem that you are seeing. Lichens are not disease causing organisms. They actually have a beneficial relationship with the plant on which they are growing. The appearance of the lichens is coincidental with the disease, not the cause.

While researching your issue, I found a superb explanation from 2009 written by another Expert, Jim Hyland. His explanation is thorough, and the individual he was assisting came back later stating that Jim was correct. So without further ado, I am going to link you to his answer. If this does not provide sufficient information, please let me know and I will research it.

http://en.allexperts.com/q/Plant-Diseases-715/2009/3/rose-sharon-crape-myrtle.ht

Do feel free to write again!