This publication identifies the types of injury caused by cold weather, the factors that influence the degree of injury, and ways to prevent or reduce injury. Tables are included listing the symptoms of freezing injury on some vegetables, frost resistance of annual flowers, floral development stages for fruit crops, critical temperatures for flower bud kill, critical temperatures and cold injury evaluations for small fruit crops, application precipitation rates, and row covers and frost protection. An illustration is also included showing the USDA hardiness zones of the United States.