Correct diagnosis

Discussion in 'Landscape Architecture and Design' started by ipm, Mar 8, 2003.

  1. ipm

    ipm LawnSite Senior Member
    Posts: 264

    Does anyone know how to diagnose Pine trees for 'Pine Beetles'. I have a few pine trees that have lime green needles and was wondering what it might be. Thanks in advance.
  2. See if this site helps. We have a lot of pine beetle here, I have see damaged trees but never active beetles.
    Btw- no help to you but I like turning beetle killed pine on the lathe, it has beautiful streaking patterns.

    Are the lime needles just at the tips? could it be the new growth?
  3. ipm

    ipm LawnSite Senior Member
    Posts: 264

    Very interesting, I imagine it would be a sight.

    The lime green needles are not consistent, so I ruled that out. I did a little research and cannot find any of the symptoms of pine beetles in these trees. I will keep a close eye on them.
  4. philk17088

    philk17088 LawnSite Fanatic
    Posts: 17,386


    I've noticed maybe the same thing on white pine. Especially in rows or mass plantings. I took a sample to the extension, the found no evidence of any insects or disease. They thought it was probably due to drought stress from the past 3 years showing up in the trees with the least amount of vigor in the plantings. Only recommendation they gave was to fert with a low N, high P & K fertilizer.
    Hope this was useful.

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