This information is updated weekly from March 2021 through October 2021 to provide current data for use in making pest management decisions.
The accumulated Growing Degree Days value from Sept 15, 2021 to Sept 20, 2021 is:
The GDD are a measure of heat accumulation used by horticulturists, gardeners, and farmers to predict plant and animal development rates. For example:
By monitoring the GDD on a daily or weekly basis it is possible to make accurate and timely decisions to protect and enhance your crop or plants.
|Eastern Tent Caterpillar||92|
|Pine Tip Moth||121|
|Azalea Lace Bug||239|
|Two-spotted Spider Mite||363|
|Boxwood Leaf Miner||448|
Calculating GDD is determined by the difference between the daily average air temperature and the base temperature of 50 degrees Fahrenheit (10 degrees Celsius). You must first find the mean temperature for the day. The mean temperature is found by adding together the high and low temperature for the day and dividing by two: