I was previously told that the tree in my front yard wasn't doing well, but I happened to meet a gardener who actually knows something about plants. He said that there is a fungus being carried in the air all over town, called a "city canker," that can attack everything but is especially a problem with citrus trees. Is anyone else finding this? (Although, of course you may need to have a gardener smart enough to know about it.) Are you doing anything about it?