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RE: bag worms on fir trees

Pat, In Oklahoma, where these creatures run rampant on the rolling hills of
Red Cedars, we have found the best way to deal with them is to use the big
foot system.  That is pick them off and step on them.  However, this often
proves impossible due to tree size and sheer numbers.  A decent organic
means is to spray your tree with Bacillus Thuringensis, a natural microbial
"virus" for chewing worms.  It is non-toxic to humans, pets, and other
insects.  Often sold under the trade name Thuricide.  Spray this early in
the spring (not now) when it is warm enough that the worms are feeding.  If
you wait till the bag is big they are hard to deal with.  They will stop
eating immediately, but will not die for some time. The bags will not fall
off the tree, but if the bags are not moving it has done its job.  You
should see a new flush of growth on the tree as it regenerates after the
worms stop feeding.
John Herndon
Community Garden Coordinator
Regional Food Bank of Oklahoma

-----Original Message-----
From: Nardandpat@aol.com [mailto:Nardandpat@aol.com]
Sent: Wednesday, February 14, 2001 8:22 PM
To: community_garden@mallorn.com
Subject: [cg] bag worms on fir trees

Can you give me any information about how to get rid of these things - I
tree that is really infested and one (on the other side of the house) that
not yet
I don't know if I'm using the right name for these things. The look like
little pine cones
dangling on the very end of branches. I've seen trees that have totally lost
all their needles that are covered by the things.
I would appreciate any information.

Pat Guerra

community_garden maillist  -  community_garden@mallorn.com

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