Plant Description

Apples are adapted to many areas of California. A cool climate is needed for coloration in most red varieties. Winter chilling requirements for most varieties (except “low chill”) are 1200–1500 hours below 45°F. Foggy days and dews can cause heavy cosmetic russetting on fruit.

Cultural Tips

Cultural practices such as site selection, soil preparation, planting, pruning, and watering are important for plant health, pest management and pest reduction when growing apple.

Pests and Disorders

Invertebrates

Plant Diseases

Environmental Disorders

Parasitic Plants

Weeds and Other Unwanted Plants