Growing Degree Days
Growing degree days (GDDs) are used to estimate the growth and development of plants and insects during the growing season. Growing Degree Day are computed by subtracting a base value temperature from the mean daily temperature and are assigned a value of zero if negative. Base temperatures are a point below which development does not occur for the organism in question. Growing Degree Day products are created for base 0, 5, 10 and 15 degrees Celsius. GDD values are only accumulated during the Growing Season, April 1 through October 31.
- Publisher
- Agriculture and Agri-Food Canada
- Resources
- 9
- Catalogue metadata updated
- 2025-07-21
Data overview
- Formats
- ESRI REST, GEOTIF, HTML, PDF
- File languages
- English, French
Official sources and licences
Resources
- Agroclimate Interactive Maps (English) (English, HTML) HTML
- Agroclimate Interactive Maps (French) (French, HTML) HTML
- Data Product Specification (English) (English, PDF) PDF
- Data Product Specification (French) (French, PDF) PDF
- Growing Degree Days (French, ESRI REST) ESRI REST
- Growing Degree Days (English, ESRI REST) ESRI REST
- Pre-packaged GeoTIF files (No linguistic component) GEOTIF
- Using AAFC Climate Services (English) (English, PDF) PDF
- Using AAFC Climate Services (French) (French, PDF) PDF