Winter orchard sanitation is a preventive practice we use to reduce pest and disease pressure before the growing season begins. Removing fallen fruit, prunings, and debris—especially overwintering mummy nuts—significantly lowers in-season input costs and improves the effectiveness of labor, sprays, and equipment.
If mummies are not properly removed, they become a primary habitat for navel orangeworm, leading to increased infestation pressure and direct damage to the following year’s crop. This results in higher crop losses, reduced quality, and greater reliance on in-season pest control measures.
By addressing these issues during the dormant period, we reduce production risk, protect fruit quality, and support more consistent yields. While it requires planned off-season labor, winter sanitation delivers strong returns through lower costs, smoother operations, reduced navel orangeworm pressure, and more reliable orchard performance.

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