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Crab Apple > Flowers > Black or discolored flowers

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  • Image: Fire Blight 1
    Credit: University of Georgia Plant Pathology Archive, University of Georgia, Bugwood.org
  • Image: Fire Blight 2

    Credit: G. Sundin, Michigan State University, Michigan State University

  • Image: Fire Blight 3

    Credit: G. Sundin, Michigan State University, Michigan State University

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green arrowFire Blight
Erwinia amylovora

  • Infected blossoms first turn gray, then black
  • Young shoots bend over forming a 'shepherd’s crook'
  • Infected leaves wilt, turn gray then dark brown
  • Infected leaves & blossoms remain attached to the tree, often even in winter
  • Branch cankers have dark, sunken & cracked bark, sapwood is streaked reddish brown
  • Infected fruit are shriveled and discolored
  • Drops of sticky honey colored liquid can be seen on infected plant parts in warm wet weather
  • More information on Fire Blight...

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