California Agriculture Online

California Agriculture journal cover, January–March 2016

Current issue:

Climate smart agriculture for California

Fruit and nut trees, like these in a Yolo County walnut orchard, need a certain amount of cold weather each year for proper foliage and flower development. As the climate warms, declining annual chill hours — the total number of hours when the temperature falls between 32°F and 45°F — may change where crops are grown. Photo by Will Suckow.