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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Radish > Spots/blotches on root

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Radish > Root > Spots/blotches on root

1 of 3
  • Image: Root Rot Complex 1
  • Image: Root Rot Complex 2

Black root
Aphanomyces raphani

2 of 3
  • Image: Potato Scab 1

Potato scab
Streptomyces scabies

3 of 3
  • Image: Boron Deficiency 1
  • Image: Boron Deficiency 2
  • Image: Boron Deficiency 2

Downy mildew
Peronospora parasitica

  • Skin on the root may be rough, corky and cracked
  • 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
  • Dark brown to black sunken area on the upper half of the radish root, center of root remains white
  • Common in cool wet weather
  • More information on Downy Mildew

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