Arborvitae Pine Trees

I have three arborvitae pine trees and they have what looks like cocoons all over them and they have spikes on them. Are these some kind of blooms or is it some kind of bug?

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1 Comment To "Arborvitae Pine Trees"

#1 Comment By Nikki On 04/29/2011 @ 6:23 am

It is a bug called a bagworm. This article will help:
https://www.gardeningknowhow.com/plant-problems/pests/insects/treatment-bagworms.htm ^[1]

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[1] https://www.gardeningknowhow.com/plant-problems/pests/insects/treatment-bagworms.htm: https://www.gardeningknowhow.com/plant-problems/pests/insects/treatment-bagworms.htm

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