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GDD Base 50 Maps

Below are links to maps that indicate the average calendar dates when regions surrounding the Great Lakes reach a particular accumulation of degree days (base 50 degrees F) with measurement beginning March 1. Read more about using degree days for pest management.

  • 50 GDD
  • 100 GDD
  • 150 GDD
  • 200 GDD
  • 250 GDD
  • 300 GDD
  • 350 GDD
  • 400 GDD
  • 450 GDD
  • 500 GDD
  • 550 GDD
  • 600 GDD
  • 650 GDD
  • 700 GDD
  • 750 GDD
  • 800 GDD
  • 850 GDD
  • 900 GDD
  • 950 GDD
  • 1000 GDD
  • 1050 GDD
  • 1100 GDD
  • 1150 GDD
  • 1200 GDD
  • 1250 GDD
  • 1300 GDD
  • 1350 GDD
  • 1400 GDD
  • 1450 GDD
  • 1500 GDD
  • 1550 GDD
  • 1600 GDD
  • 1650 GDD
  • 1700 GDD
  • 1750 GDD
  • 1800 GDD
  • 1850 GDD
  • 1900 GDD
  • 1950 GDD
  • 2000 GDD

Christmas Trees

  • Growing Degree Day Information
  • GDD of Landscape Insects
  • GDD of Conifer Insects
  • GDD Base 50 Maps
  • Identifying weeds in Christmas trees

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Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Quentin Tyler, Director, MSU Extension, East Lansing, MI 48824. This information is for educational purposes only. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned.

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MSU Extension Integrated Pest Management

  • Home
  • Agriculture
  • Christmas Trees
  • Christmas Trees

  • Growing Degree Day Information
  • GDD of Landscape Insects
  • GDD of Conifer Insects
  • GDD Base 50 Maps
  • Identifying weeds in Christmas trees
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