Last month, a BYGL Alert was written as an intro or refresher to growing degree days followed by a second alert, Growing Degree Days (GDD) – Part 2, (March 16, 2020), https://bygl.osu.edu/index.php/node/1455 . And ealier this week, Joe Boggs authored a BYGL Alert, Observations on Phenology (April 13, 2020), https://bygl.osu.edu/node/1504 highlighting the sequence of plant bloom, insect activity and optimal timing for pest management.
Here is a look at GDD accumulations across the state as of April 16, 2020. While I couldn’t do every Ohio zip code – but you can easily do your own – this gives you a taste of where others are at in Ohio.
Toledo (43615) - 89 GDD
Cleveland (44120) - 91 GDD
Canfield (44404) - 86 GDD
Athens (45701) - 230 GDD
Ironton (45638) - 251 GDD
Cincinnati (45223) - 241 GDD
Lima (45804) - 108 GDD
Mansfield (44906) - 135 GDD
Columbus (43210) - 178 GDD
Chillicothe (45601) - 242 GDD
Once you have your own GDD, you can click on the ‘summary’ tab and it will provide the last 6 years of GDD accumulations on that same date. I used the zip code of the office in Toledo as an example.
Toledo (43615) – this year, plus 6 past years
2020, April 16 - 89 GDD
2019, April 16 - 93 GDD
2018, April 16 - 83 GDD
2017, April 16 - 219 GDD
2016, April 16 - 137 GDD
2015, April 16 - 84 GDD
2014, April 16 - 80 GDD
Just as you can change the zip code on the website, you can also manipulate the date if you would like to explore what was the GDD on a specific date in the past. If you have any questions, or need additional guidance to navigate the website if you are a newbie, send an email to stone.91@osu.edu and in the subject line include: GDD
