Weeping willow in trouble?
http://shoreballroom.com/tree.JPG
My wife and I purchased our house about 3 years ago. We have a tall weeping willow and it's not looking too good. At first it started dropping branches and now it's getting new growths very low on the trunk. I'm not sure what's wrong with it since we are new to the house and have not done much other than take out some bushes that were about 20ft away from it. We would like to keep the tree since we love weeping willows. Any suggestions?
Also, we would like to build a planter around the tree, a short one as you can tell from the picture. Will this harm the tree at all?
Thanks in advanced