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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Peas > Stem discolored tan to brown

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Peas > Stem > Stem discolored tan to brown

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  • Image: Early Blight 1
  • Image: Early Blight 2
  • Image: Early Blight 3

Mycosphaerella Blight
Mycosphaerella pinodes and Phoma medicaginis var. pinodella

  • Seedling stem turn dark brown to black, often near the soil line, seedlings may be killed or grow weakly
  • Small dark flecks on stems, leaves and pods
  • Leaf spots grow into round brown spots with several concentric rings like a bull's eye
  • Purplish black lesions on stems
  • More information on Mycosphaerella Blight...
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  • Image: Virus 1
  • Image: Virus 2
  • Image: Virus 3

White Mold
Sclerotinia sclerotiorum

  • Stems, leaves and pods develop a soft watery rot
  • White fluffy fungal growth appears on infected plant parts
  • If the stem is girdled it turns dry and tan, the plants wilts
  • Inside dead stems are hard black sclerotia
  • Symptoms appear when plants flower
  • Common in densely planted, or low lying fields
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  • Image: Northern Root Knot Nematode 1

Aphanomyces Root Rot
Aphanomyces euteiches

  • Pea shoots are yellow, stunted and may wilt
  • The stem is brown and soft at the soil line
  • Roots have brown soft rotten spots
  • Most common in heavy wet soils

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