Outside of using them for composting, worms just haven't been on our radar. That is, until they invaded our Walnut tree (worm jerks!). So we sat down with our old friend Google and tried to find out exactly what was taking over our tree and how to make it stop. Were they web worms? Bag worms? Or the Eastern Tent Caterpillar? Find out the differences on each and how you can keep your trees in check after the jump.