Fighting Woodborers

iamdouglasOctober 28, 2009

Hello to all once more. . .

I've heard of the battle being waged against various woodborers due to the rising temps during our winters. I have several huge poplar trees that are showing spots between 4 and 12 feet off the woods floor that I'm told are woodborerers.

This might sound crazy (it wouldn't be the first time for me) but I'm wondering if there is anything I could do to bring the temps down during the really cold days in the winter to kill the little buggers.

I know ambient temperature get's pleny cold during the winter to freeze water but I'm guessing the tree core keeps the bark warm enough to keep the borers comphy.

I'm thinking a fan placed at the base of the tree in question pointed up might take the warmth away from the bark, hopefully killing the woodborer. Maybe two days per tree. Any thoughts?

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lycopus(z5 NY)

When I think of woodborer damage, I think of the galleries created under the bark as the main indication of their presence. On the outside of the bark you are only likely to find a few holes created after they mature and fly away. Are you seeing a lot of holes that are evenly spaced? Because that would indicate the presence of sapsuckers. If you are not familiar with this do a google image search for "sapsucker holes" to see what I mean.

    Bookmark   October 28, 2009 at 1:20PM
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brandon7 TN_zone(7)

The best way to combat most borer problems is to maintain healthy and vigorous trees. Borers preferentially attack unhealthy trees and don't often have significant impact on healthy ones.

In some cases, plagues of certain (generally exotic) insects may widely attack a certain species. In these cases, it's usually best to check with your local ag extension agent for possible specific control measures.

Sorry, but I think the fan idea may be a little....well, crazy. LOL

    Bookmark   October 28, 2009 at 3:37PM
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iamdouglas

No, I know what woodpecker holes look like. These are spots in the bark that continually weep water.

Stirring the air around the trunk to draw the warmth out of the bark in an attempt to freeze the borers may not be as crazy as you think. It calls to mind the trick farmers in Fla utilize to keep frosts from ruining their fruit, that is to spray with water before the freeze. It's the opposite of what I want to accomplish but it may be worth a try. I'll let you guys know next year.

Does anyone have any experience with pesticidal tape?

. . .and thank you all for your contributions,

Doug

    Bookmark   October 28, 2009 at 7:58PM
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brandon7 TN_zone(7)

The tape works well for certain types of insects, but is useless against many others. You need to identify the specific type of tree(s) you are dealing with and the specific type of borer. The solution to your problem will depend on what you're dealing with. You could try all kinds of things and possible never solve the problem without a proper ID. Also, there may be little need to reinvent the wheel if good wheels are widely available. Check with your local extension office. If you can ID the problem first, that might be helpful, but if you can't, they may be able to help there also.

    Bookmark   October 29, 2009 at 10:11AM
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