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Black Eyed Susan (Rudbekia) > Distorted leaves

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  • aster yellows 1
    Credit: L. Japs
  • aster yellows 2

    Credit: LeVahn

  • aster yellows 3

    Credit: LeVahn

  • - CLICK PHOTOS TO ENLARGE -

green arrowAster Yellows
The Aster Yellows Phytoplasma

  • Leaves and stems may be yellow, stunted and spindly
  • Flowers are small and distorted, petals may remain all or mostly green
  • A brush-like mass of weaek shoots may arise from the stem
  • Occurs most often in mid to late summer
  • More information on Aster Yellows...
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  • Herbicide 3
    Credit: Michelle Grabowski
  • Herbicide 1

    Credit: Michelle Grabowski

  • Herbicide 2

    Credit: Michelle Grabowski

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green arrowHerbicide Damage
Phenoxy herbicide ex. 2,4D

  • Leaves are twisted, cupped, or distorted
  • Leaves may appear thick and leathery
  • Veins in leaves are thick and close together
  • Side of the plant closest to the herbicide application is most severly affected
  • In severe cases the entire plant may be affected

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