I planted a wisteria in our backyard and it was growing heartily until a few weeks ago. It has yellow and brown spots on the leaves, and even some (although not a lot of) holes. Many of the leaves are even falling off. I thought it might be a fungus and bought spray which doesn't seem to be helping. Incidentally, I have a plant in a pot right next to the wisteria (which is in the ground) and the plant in the pot has recently been showing similar signs of sickness. In fact, I saw hords of what look like ants crawling all over the plant in the pot. I don't want to loose either plant. Any ideas? I live in VA if that's any help to figuring out this puzzle.