Disease ID on tree

Discussion in 'Pesticide & Herbicide Application' started by GreenT, Jul 14, 2007.

  1. GreenT

    GreenT LawnSite Fanatic
    Messages: 42,962

    I have a poplar tree (aka tulip tree) in my property that has developed some kind of disease in the last couple of years.

    The tree starts the season looking great. New leaves look great in the spring but right around this time (May-June) they start getting black spots that grow in size and then the leaves drop off.

    I'm sure is some kind of fungal disease since it coincides with the rainy season here, but nothing else seems to be affected with it. The pictures show a new leaf, an older fallen leaf, a branch view, and the whole tree.

    I'm in North Central Florida.

    Any help from the pros with identification/treatment is appreciated. Thanks.




  2. heritage

    heritage LawnSite Bronze Member
    Messages: 1,358

    Green T,

    Tar Spots. Rhytisma liriodendri

    Write this down and bring a couple of leaves to your County Cooperative Extension Branch. They will give you recomendations on when to treat the tree next year after it leafs out again.

    This disease will not kill the tree....Just looks bad :(

    Great Photo shots!

    Pete D.
  3. GreenT

    GreenT LawnSite Fanatic
    Messages: 42,962


    Is it a fungus?
  4. americanlawn

    americanlawn LawnSite Fanatic
    from midwest
    Messages: 5,955

    Leaf spot --- no big deal, cuz it's very common, and all Tulip trees get it. Some years, it's not much of a prob. Tallest recorded Tulip tree = Indiana. Bottom line: Leaf spot on Tulip trees is purely cosmetic, and it poses no harn whatsoever to the tree's health.

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