Identification: Borer in Maple Tree

Discussion in 'Maples' started by littlemaple, Jun 4, 2019.

  1. littlemaple

    littlemaple New Member

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    North Saanich

    My wife and I live in Deep Cove, North Saanich and have just had an issue with borers in a young Japanese Emperor Maple tree that we purchased 2 years ago.

    The tree was doing great and it started to leaf this year when it was hit with caterpillars that destroyed the initial flush of leaves very quickly and completely. We treated it with BTK and killed the caterpillars and were hoping that the tree would put forth another set of leaves. Unfortunately we then realized a week later that the tree had a large number of borer holes. The tree has since died (we scratched the surface and there was no green under the bark).

    We’re looking to replace the tree but are afraid of putting something in that will be susceptible to the same pest. We’re having a hard time identifying the pest which is why we're turning to you in the hope that we can identify it and hopefully put in a more appropriate tree.

    We’ve uploaded some photos of the bug and the holes in the tree:

    IMG_1837.jpg IMG_1839.jpg IMG_1838.jpg Screen Shot 2019-06-04 at 10.55.27 AM.png Screen Shot 2019-06-04 at 10.55.18 AM.png Screen Shot 2019-06-04 at 10.54.55 AM.png Screen Shot 2019-06-04 at 10.54.29 AM.png Screen Shot 2019-06-04 at 10.53.26 AM.png

    We have natural hedgerow up the side of the property and think the original caterpillars came from the hawthornes in there. We have another maple on the other side of the property (Bloodgood) that seems to have escaped unscathed.

    Thanks for any insights you can offer! The Japanese maple was a memorial tree so it’s important we come up with a nice long term alternative.

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