Woolly Adelgid

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Tree Pig

A.K.A. Stihl-O-Matic
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Doing a job removing a bunch of hemlocks already destroyed by Woolly Adelgids. HO treated the trees for years but woods are now devastated. Question is HO only wants to pay to drop the trees and remove debris to rear of the woods. She still has a bunch of trees that are in final stages not being removed so the infestation will still be heavy but will leaving the limbs with out chipping them increase the risk to any remaining healthy trees. I know the proper answer is to remove and destroy infested brush but HO has so many trees dead already that its unaffordable. First priority is just removing the dangerous ones for now.
 
I don't think leaving the branches unchipped will increase the risk on the remaining trees. The risk is any insects attached to the removed branches moving to 'healthy' trees. I believe they are still in the larvae stage, so this is unlikely. As the adults can fly, if they were in this stage, they would fly away before you could put the branch through the chipper.

Your comment on removing and destroying infested brush, I think, more applies to fungal infestations rather than insects.

I'm surprised that her trees are at this stage if she has been vigilant in her treatments. Adelgids are pretty well controlled using soaps and oils (applied properly at the right time of year).
 
I don't think leaving the branches unchipped will increase the risk on the remaining trees. The risk is any insects attached to the removed branches moving to 'healthy' trees. I believe they are still in the larvae stage, so this is unlikely. As the adults can fly, if they were in this stage, they would fly away before you could put the branch through the chipper.

Your comment on removing and destroying infested brush, I think, more applies to fungal infestations rather than insects.

I'm surprised that her trees are at this stage if she has been vigilant in her treatments. Adelgids are pretty well controlled using soaps and oils (applied properly at the right time of year).

She says she has been battling it for quite some time, the trees at the edge of the yard where she had it treated by soil injections, I am guessing with imidacloprid. Those trees are still doing well the ones in the woods she had sprayed and they did well for about 7 years I guess but now they are quite gone.

My concern was just not wanting to have to entertain a problem with accusations that we did not remove the infested material and hence further contributed to her problem.

But it is so severe that I think its well beyond that point.
 

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