30-year Average Growing Degree Days (GDDs), Base 5

Growing Degree Days (GDDs) are used to estimate the growth and development of plants and insects during the growing season. Insect and plant development are very dependent on temperature and the daily accumulation of heat. The amount of heat required to move a plant or pest to the next development stage remains constant from year to year. However, the actual amount of time (days) can vary considerably from year to year because of weather conditions.

Base temperatures are a point below which development does not occur for the organism in question. Base 5 temperatures are commonly used for alfalfa, canola and general plant growth.

These values are calculated across Canada in 10x10 km cells.

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 18:26 (UTC)
Created	April 17, 2026, 18:26 (UTC)
contact_email	aafc.agri-geomatics-agrogeomatiques.aac@agr.gc.ca
contact_person	{"fr": "Gouvernement du Canada; Agriculture et Agroalimentaire Canada; Direction générale de la science et de la technologie,aafc.agri-geomatics-agrogeomatiques.aac@agr.gc.ca", "en": "Government of Canada; Agriculture and Agri-Food Canada; Science and Technology Branch,aafc.agri-geomatics-agrogeomatiques.aac@agr.gc.ca"}
criticality_level	[]
data_dictionary	EPSG:3857,http://www.epsg.org/,8.3.4
geographic_scope	[]
open_canada_collection	fgp
open_canada_date_published	2021-10-06 00:00:00
open_canada_keywords	{"fr": ["Cultures", "Précipitation", "Agriculture", "Terre agricole", "Température"], "en": ["Crops", "Precipitation", "Agriculture", "Farmlands", "Temperature"]}
open_canada_subject	["nature_and_environment", "science_and_technology"]
sensitivity_level	unrestricted
title_fr	Moyenne des degrés-jours de croissance (DJC) sur 30 ans, base 5
update_frequency	irregular