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ID This Disease

Discussion in 'Lawn Mowing' started by Doogiegh, Aug 17, 2003.

  1. Doogiegh

    Doogiegh LawnSite Senior Member
    from Central N.J.
    Messages: 871

    Hey Guys,
    I have a customer that has a tree with disease or fungus on it. I've attached a picture so you can see what it is. They asked me what it was and I told them quite honestly that I didn't know, but I'd try to find out for them what it is and what to use to fix it. I will NOT be doing any applications/spraying for them as this particular customer likes to do some yardwork themselves and it something that he wants to take care of before the tree dies entirely. So, what is this white stuff?

    BTW, These leaves were DARK RED in color earlier today when I plucked them off the tree. The Red faded and now they are green. Thanks.

    leaves0001a.jpg
     
    Doogiegh, Aug 17, 2003
    #1
  2. vipermanz

    vipermanz LawnSite Bronze Member
    from Birmingham Alabama
    Messages: 1,773

    almost looks like snow!!:D
     
    vipermanz, Aug 17, 2003
    #2
  3. GLAN

    GLAN Banned
    from Long Island, New York
    Messages: 1,647

    Cottony Scale


    Have your customer contract a tree spraying service.


    That much of a problem will affect the tree. In much smaller populations is not much to worry about.
     
    GLAN, Aug 17, 2003
    #3
  4. Bob Minney

    Bob Minney LawnSite Bronze Member
    from The Hottest driest city next to Hades - Denver Col
    Messages: 1,094

    Looks like powdery mildew to me
    seen in cool wet/humid conditions-
    Is it a Japanese maple?
     
    Bob Minney, Aug 17, 2003
    #4
  5. Doogiegh

    Doogiegh LawnSite Senior Member
    from Central N.J.
    Messages: 871

    Yes, I believe the tree is a Japanese Maple.
    And here in Central NJ, it has been 83-88 degrees for a long time, and August has seen inches and inches of rain already. Humidity hasn't been lower than 70% in I don't know how long. <G>

    I disagree on the cottony scale idea because in looking that up, that's like lumps of larvae that turn into bugs. This is much thinner and is much more like a mold or fungus.

    Gary
     
    Doogiegh, Aug 17, 2003
    #5
  6. Popsicle

    Popsicle LawnSite Member
    from Western Washington
    Messages: 189

    I agree with Bob. Powdery Mildew.
     
    Popsicle, Aug 17, 2003
    #6

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