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I can't find the attacker

Posted by whaas 5a SE WI (My Page) on
Thu, Jul 17, 14 at 14:50

Got this 7'ish Pinus cembra 'Glauca'. Had a slew of resin with the pine dust gooping out of the wound.

Wiped it away and took a paper clip and tried poking around and it was fairly deep in multiple directions.

Week later today I checked and yet another large gob of sap and pine dust.

Either this or several borers continue to borer in the pine or this is just additional pine dust flowing from the wound.

Given this is a 10+ year plant I'd rather be a bit more proactive.

Any suggestions for what to do? I can certainly apply a systemic but I believe it takes some time for the typical Bayer products to be absorbed.

Is there anything else I can use that is instant as a precaution since I can't locate and pierce the would be borer?

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Follow-Up Postings:

RE: I can't find the attacker

Have you ever used Azasol? I've used it for my vegetable garden, but you can inject it into trees. It works systemically.

RE: I can't find the attacker

Use a pocket knife and try to dig that borer or borers out.

I recently purchased: Bonide Annual Tree & Shrub Insect Control which can be applied as a foliar application or drench. I got it on Amazon. It's only a teaspoon and 1/2 per gallon as a foliar spray so a small bottle goes a very long way.

After you've dug and if you're satisfied, wrap aluminum foil around the wounded areas and tie it in place with stretch tape or other. Aluminum foil acts as a callous generator as well as a barrier.


RE: I can't find the attacker

nix foliar spray. I read just now that foliar sprays are ineffective once a borer has bored into a tree.

Your best/only options are a knife and a soil drench followed up with aluminum foil.


RE: I can't find the attacker

  • Posted by whaas 5a SE WI (My Page) on
    Fri, Jul 18, 14 at 19:25

Thanks for the suggestions!

So I skewer'ed that m'fer. I can't believe how much damage it did. I kept use the paper clip as a guide to see how far it went. Hoping it was just the one.

I guess I will see what the tree does over the next year. Unreal how it goes for what I would have thought was one of my healthiest of my favorite screening ones to boot.

Still do the aluminum foil based upon the wound?

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RE: I can't find the attacker

  • Posted by lizo SE WI zone 5 (My Page) on
    Sat, Jul 19, 14 at 2:04

wow! this looks like something out of a horror movie! how did you dare to remove so much bark? (I hope he's the only one)

RE: I can't find the attacker

Good job. Yep, wrap it up. I'd do a drench, too.


RE: I can't find the attacker

  • Posted by whaas 5a SE WI (My Page) on
    Sun, Jul 20, 14 at 22:24

It does look pretty bad doesn't it? I used the paper clip as a guide to seek out the gap under the bark.

We'll have to see how it recovers by next spring. Otherwise its going to be a very vulnerable plant long term.

RE: I can't find the attacker

That is a nasty wound. The width of it is a concern. I had similar damage on my Picea a. 'Reflexa' about 4 years ago.

It needs to be sealed off. Sooner the better.

I had a huge wound. About 2w.x3 inches tall after all the cutting and digging to remove the critter.

I used Doc Farwell's Heal And Seal with great results. It will seal off that leaking sap in a matter of days. My tree now is completely healed.

Just throwing it out there as an option. THat is what this forum is for.

Good luck,


Here is a link that might be useful: Tree wound.

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