Q: I noticed that one of my evergreen trees has a bunch of small brown sacks hanging on it. I thought they were pine cones, but they were soft and hollow when I tried to pick one. What are these things? They are on a part of the tree, which is looking terrible because some of the needles are missing. Do you think this object is the cause?

A: The bagworm, the caterpillar stage of a moth, is eating the leaves off the plants and using some of the leaf parts to make itself a protective cov ...

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