Why are my cucumber leaves turning yellow & brown?

Discussion in 'Fruit and Vegetable Gardening' started by worldharmony, Aug 4, 2009.

  1. worldharmony

    worldharmony Active Member

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    My cucumber plant has produced some nice cucumbers, but soon after the first harvest, the leaves are getting large yellow splotches and then turn brown, wither and die. What is happening?
     
  2. Durgan

    Durgan Well-Known Member 10 Years of Activity

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    This may be your problem.

    http://www.omafra.gov.on.ca/english/crops/facts/downy-mildew-a.htm

    Introduction

    Downy mildew is a serious disease of cucurbit crops grown in Ontario (Figure 1). It is caused by the fungus-like water mould Pseudoperonospora cubensis. Once established in a region, the disease can spread rapidly causing significant loss of fruit quality and yield.
     
  3. Durgan

    Durgan Well-Known Member 10 Years of Activity

    Messages:
    1,588
    Likes Received:
    6
    Location:
    Brantford,Ontario, Canada
    Local Time:
    12:52 AM
    This may be your problem.

    http://www.omafra.gov.on.ca/english/crops/facts/downy-mildew-a.htm

    Introduction

    Downy mildew is a serious disease of cucurbit crops grown in Ontario (Figure 1). It is caused by the fungus-like water mould Pseudoperonospora cubensis. Once established in a region, the disease can spread rapidly causing significant loss of fruit quality and yield.
     

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