COLLEGE OF FOOD, AGRICULTURAL,
AND ENVIRONMENTAL SCIENCES

The Ohio State Phenology Calendar

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Wooster on 9/29/2026 4:46:36 AM is 3,088 GDD

The GDD on 9/29 in previous years:


  • 2025: 2,844
  • 2024: 3,166
  • 2023: 2,522
  • 2022: 3,100
  • 2021: 3,166
  • 2020: 3,003
  • 2019: 3,038
  • 2018: 3,213
  • 2017: 2,972
  • 2016: 3,252
  • 2015: 2,939
  • 2014: 2,757
  • 2013: 2,870
  • 2012: 3,266
  • 2011: 3,045
  • 2010: 3,205
  • 2009: 2,679
  • 2008: 2,745
  • 2007: 3,024
  • 2006: 2,861
  • 20 Year GDD Average for Wooster on 9/29 - 2,983
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Denise Ellsworth
1680 Madison Ave. | Wooster, OH 44691
Phone: 330-263-3723 | ellsworth.2@osu.edu


Ashley Kulhanek
4046 Medina Road | Medina, OH 44256
Phone: 330-661-6404 | kulhanek.5@osu.edu


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