Return to the Trees Forum | Post a Follow-Up

 o
Pine Cone Looking Cocoons Killing Aborvitae

Posted by jimkw 5 - Mid Ohio (My Page) on
Tue, Aug 12, 08 at 20:44

I have several Arborvitae that are dieing because of a cocoon that actually looks very much like part of the shrub. Several of my plants have already died and the others that are still alive have massive amounts of these cocoons. I pulled most of the ones off the ones that are not already dead and squashed them. They are now starting to show up on my Norway Spruce trees also. How do I get rid of these things?

I have read a little and some are calling them bag worms, but they are not what I think of as bag worms. They are not the silky tent like caterpillars that I have always called bag worms. When I was a kid my Dad kept them out of his trees by putting aluminum foil around the base of the tree and they could not climb over the foil. That is not what I have though.

Help before I loose all my bushes!!!


Follow-Up Postings:

 o
RE: Pine Cone Looking Cocoons Killing Aborvitae

Bag worms are quite different from tent caterpillars :-) Without a photo, it's hard to be certain, but it certainly sounds as though you might have bag worms, which can be very detrimental to a variety of conifers. See the attached link for both photos of the pests and how best to control. If you can reach them, manual removal is always a preferred method.

Here is a link that might be useful: bag worms


 o
RE: Pine Cone Looking Cocoons Killing Aborvitae

  • Posted by jimkw 5 - Mid Ohio (My Page) on
    Wed, Aug 13, 08 at 8:06

Yes thos are definitely what I have. I will look for some Talster One and spray them, but it's too late for several of my Aborvitae. I'm fairly certain I got them off the spruce trees in time to save them.


 o
RE: Pine Cone Looking Cocoons Killing Aborvitae

I think they are bagworms as well. I have seen them attack Leylands, cryptomeira, arbs etc. An early spraying for them with a insecticide is key. Conctact your local extension service and ask them for recommendations or do a google search for bagworms and you should come up with some quick answers. Good Luck!


 o
RE: Pine Cone Looking Cocoons Killing Aborvitae

and i suppose you should know.. that an ARB.. will not have a PINE cone ... eh???

they have cones ... ergo they are conifers... but they are not PINE cones.. which are reserved specifically for pines ...

ken


 o
RE: Pine Cone Looking Cocoons Killing Aborvitae

  • Posted by jimkw 5 - Mid Ohio (My Page) on
    Thu, Aug 14, 08 at 10:59

I did not say my Arbs have pine cones, I said they had cocoons that look like pine cones because I could not think of a better way to describe them.

Anyway I pulled bout 1/3 of a bucket full off of one bush only last night. Took me about 45 minutes to just get them off of this one bush. This one still looked very green so I got them off of this one. I already took them off the ones that just had a few, but the ones that have so many and already look dead I have done nothing with yet. Probably just going to dig them out this weekend and burn them to kill the worms.


 o
RE: Pine Cone Looking Cocoons Killing Aborvitae

Bagworms can really do a lot of damage if allowed to build up a big population, that's for sure. You are doing the only thing you can, right now, by removing them. Next year's eggs are in those little 'bags'!


 o
RE: Pine Cone Looking Cocoons Killing Aborvitae

  • Posted by jimkw 5 - Mid Ohio (My Page) on
    Mon, Aug 18, 08 at 10:19

I have it really bad! The bagworms are actually sticking to the side of my house and we have found them in the garage and all over the black top on my driveway. I pulled another half bucket off the same tree that I pulled them off of two days earlier.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Trees Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here