B.C. Frost Protection Guide

Frost or freezing temperatures in the early spring or late fall can result in considerable damage to many of British Columbia’s horticultural crops. A significant portion of this crop loss can be prevented by implementing some form of frost protection.

Frost protection is required in certain areas or small isolated locations to lengthen the growing season making it possible to grow horticultural crops which otherwise would not be feasible or economical. In B.C., frost protection systems are mostly used to ensure that maximum crop production and quality can be achieved every year.

This publication explains the types of frosts that may occur, passive and active methods of frost protection and general guidelines on designing irrigation systems to protect against frost. Additional information on frost protection can be obtained from the publications cited in the bibliography.

The intent of this publication is to provide information on frost occurrence and protection thereof to producers and agri-business personnel.