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Raspberry > Leaves > Distorted/twisted Leaves

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  • Image: Spider Mites 1

    Credit: Ohio State University

  • Image: Spider Mites 2

    Credit: M. Ellis, Ohio State University

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green arrowSpider Mites
Tetranychus urticae

  • Feeding on the underside of leaves causes a “russet” appearance to the leaves; leaves may become distorted
  • In heavy infestations, webbing can be found on underside of leaves
  • Adult spider mites are very small (approximately 1/50 inch in length), and are yellow to dark crimson, with dark spots
  • Mites usually appear in late June-August; more prevalent in hot, dry weather
  • More information on Spider Mites...
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  • Image: Powdery Mildew 1

    Credit: M. Grabowski, U of MN Extension

  • Image: Powdery Mildew 2

    Credit: M. Grabowski, U of MN Extension

  • Image: Powdery Mildew 3

    Credit: M. Grabowski, U of MN Extension

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green arrowPowdery Mildew
Podosphaera aphanis

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  • Image: Herbicide Injury

    Credit: M. Pritts, Cornell Univ.

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green arrowHerbicide Injury

  • Distorted and twisted leaves, margins of the leaf are often cupped upward
  • Leaves appear yellow or bleached

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