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Radish > Root > Holes/cracks in root

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  • Image: 1

    Credit: Kristen Callow, Ontario Ministry of Agriculture

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green arrowUneven Moisture

  • Causes radish root to split or crack
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  • Image: 1

    Credit: S. Burkness, University of Minnesota

  • Image: 2

    Credit: Frank Peairs, Colorado State University, Bugwood.org

  • Image: 3

    Credit: Alton N. Sparks, Jr., University of Georgia, Bugwood.org

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green arrowWireworms
Agriotus spp., Melanotus spp.

  • Wireworms burrow into and feed on the radish root
  • Leaves show no damage
  • More common in gardens that were previously in grass or sod
  • Larvae are thin, shiny, jointed, yellow to reddish-brown color, and approximately ¼ - 1 ½ inch long
  • Larvae can be found throughout the growing season
  • More information on Wireworms...
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  • Image: 1

    Credit: T. Zitter, Cornell University

  • Image: 2

    Credit: Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org

  • Image: 3

    Credit: Colucci, North Carolina State University

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green arrowDowny Mildew
Peronospora parasitica

  • Skin on the root may be rough, corky and cracked
  • Dark brown to black sunken area on the upper half of the radish root, center of root remains white
  • Angular yellow spots on leaves that eventually grow into tan papery areas with a yellow border
  • Fuzzy white to gray fungal growth can be seen on the underside of the leaves
  • Common in cool wet weather
  • More information on Downy Mildew...

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