Hi I have a fern sort of tree in my front yard. 2 Years ago when I bought the house, this tree was in excellent health as can be seen from the photo from 2 years ago. I am a complete novice when it comes to maintaining a garden and all i know is to water the garden. I didnt understand what was happening to the tree untill it reached a stage it is now. I dont know for sure whether it is canker or not, but the tree is not in good condition as can be seen from the photos. I am looking for ways to revive the tree and am ready for the work involved. Please...Any suggestions are welcome....