What is wrong with these fir trees?

Discussion in 'Fertilizers, Pesticides and Diseases' started by ozzieboy, Nov 5, 2013.

  1. ozzieboy

    ozzieboy LawnSite Member
    Messages: 3

    Today is November 5 here in south east Michigan. The needles just started browning a week ago and aside from a few gypsy moth egg masses I notice a bunch of leaking areas but no obvious signs of borer holes. There are also several branches which are broken and leaking. These trees are roughly 30' tall and all 3 are declining at the same pace. Any assistance would be greaty appreciated.


    fir decline4.jpg

    fir decline3.jpg

    fir decline 2.jpg

    fir decline5.jpg
  2. HortGuy1

    HortGuy1 LawnSite Member
    Messages: 53

  3. ozzieboy

    ozzieboy LawnSite Member
    Messages: 3

    I have been scouring the MCU website on conifer issues but so far no luck. I beleive I will send a sample. Thanks.
  4. heritage

    heritage LawnSite Bronze Member
    Messages: 1,358

    Could be Black turpentine beetles or Red turpentine beetles having had a quick look in Johnson and Lyon's book "Insects that feed on trees and shrubs"

    Hope this points you in the correct direction. When you confirm pest ID, learn life cycle of pest and why the tree was attacked ie. stress Biotic or Abiotic.

    Then a control plan. Good luck.
  5. Mark Oomkes

    Mark Oomkes LawnSite Fanatic
    Messages: 15,285


    I'm guessing the pitch is unrelated.
  6. heritage

    heritage LawnSite Bronze Member
    Messages: 1,358

    Mark from Ozzie's photo looks like good old Senescence.

    The new growth looks pretty good.......
  7. Trees Too

    Trees Too LawnSite Gold Member
    Messages: 3,911

    I agree on point of the needle yellowing and the pitch being unrelated.

    The yellowing actually just looks like "natural fall inner needle drop". Which is a normal cycle for the inner-most evergreen foliage to yellow and shed in the Autumn season.

    All sap on evergreens is of a white to yellowish color. Thus making it more noticeable on tree bark, as opposed to the clear sap of deciduous trees.

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