COLLEGE OF FOOD, AGRICULTURAL,
AND ENVIRONMENTAL SCIENCES

The Ohio State Phenology Calendar

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Wooster on 7/21/2026 3:46:09 PM is 1,815 GDD

The GDD on 7/21 in previous years:


  • 2025: 1,647
  • 2024: 1,805
  • 2023: 1,477
  • 2022: 1,747
  • 2021: 1,718
  • 2020: 1,665
  • 2019: 1,677
  • 2018: 1,776
  • 2017: 1,733
  • 2016: 1,660
  • 2015: 1,595
  • 2014: 1,564
  • 2013: 1,712
  • 2012: 1,993
  • 2011: 1,682
  • 2010: 1,825
  • 2009: 1,461
  • 2008: 1,522
  • 2007: 1,639
  • 2006: 1,577
  • 20 Year GDD Average for Wooster on 7/21 - 1,674
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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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