Question
I have a birch tree and while i was watering it, I noticed that there were four bright yellow rings around one of the branches. I was wondering if this is something to worry about and if it is what should i do?

Answer
India:
This is a new one to me. I have never heard of this before. Can you send me a photo of that specific area? I will be glad to look at it.  Do the rings appear to be causing any difficulty to the branch?  If not, I'd just keep a close watch for any changes.  If some problems start to develop, removal of that particular branch may be in order.

Regards
Steve