So we have been doing this for a while now and are seeing something for the first time. Bag Worms are a bug that are fairly common to be seen growing on Juniper Trees and other cypress type plants. More recently we have been seeing a species of bag worms growing on Indian Hawthorns. As you can see in the video, they physically eat the leaves away to the point that almost all of the foliage dies and falls off. The plants is still alive but it has no more leaves. It happens very fast and cant be ignored. This is also a good example of why we say getting on a preventive plan in a good idea.