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Bagworm (?) on P.s. 'Angel Falls' (2 Replies)

Posted August 28, 2017 at 10:39 am

Hello, A friend of mine asked me about these growths on her ‘Angel Falls’. I think it is bagworm.
1. Can anyone confirm?
2. Also, does anyone know the best way to treat this…organically is preferred if possible. I read that the silk can damage the branches after many years and that they feed off the tree.
3. What causes this?

Thank you for any help!

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Posted August 28, 2017 at 1:56 pm

definitely bag worm. The best non-chemical treatment is to simply pluck them off and squish them.

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Posted September 9, 2017 at 9:15 am


I found this link quite informative:

I am in SE Pennsylvania and I’ve struggled with an increasing bag worm infestation in my 18′ X 75′ arborvitae hedgerow. The bag worms later appeared in my spruce trees and on one of my bonsai trees. Plucking all of them was not possible so I tried a spinosad (bacterial) pesticide product this year. I applied it (sprayed) in mid May and mid June. It has been very effective thus far. No visible damage and no sign of bag worm cocoons.

This product is a relatively broad pesticide so read the label first to decide if it is the best solution for your infestation.


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