Q&A - What are these things growing on my arborvitae?

Question:
What are these things growing on my arborvitae?

Answer:
Chris Cooper and Mike Dennison talk about bagworms. They prefer to grow on conifers but will live on other plants as well. The worm makes a bag of silk and parts of the host plant. The bags are resistant to insecticides. Chris and Mike talk about how to kill them.

Related Resources:
The Bagworm and Its Control
The Bagworm