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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Winter Squash and Pumpkins > Poor or no emergence

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Winter Squash and Pumpkins > Seedling >Poor or no emergence

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  • Image: Damping off 1
  • Image: Damping off 2
  • Image: Damping off 3

Damping off
Pythium spp., Rhizoctonia sp., and Fusarium spp.

  • Seed may rot in soil
  • Leaves and stem appear discolored, water soaked
  • Seedling may tip over at soil line
  • Cobweb-like or cotton-like fungal growth on seedlings or potting mix
  • More information on Damping off
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  • Image: Cold Temperature 1
  • Image: Cold Temperature 2

Cold Temperature

  • Weather has been cold (below 50°F) and wet
  • Soil is cold (below 62°F) and damp to the touch
  • Leaf edges turn olive green to brown
  • In severe cases entire leaves, young shoots or the entire plant may be completely discolored and wilted
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  • Image: Seed Corn Maggot 1
  • Image: Seed Corn Maggot 2
  • Image: Seed Corn Maggot 3

Seed Corn Maggot
Delia platura

  • Maggots feed on developing seed and can completely destroy the seed, or damage the cotyledons and first true leaves
  • Maggots are yellowish-white, about ¼ inch in length, and legless
  • More common in cooler weather
  • Seed corn maggot should not attack plantings made after June 1st
  • More information on Seed Corn Maggot

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