Agriculture: Walnut Pest Management Guidelines


This year-round IPM program covers the major pests of walnut in California.

About Delayed-Dormancy

What should you be doing during this time?

If a significant number of mummy nuts are still on trees or on the ground at the end of February:

  • Remove mummy nuts from trees before mid-March.
  • Flail mow to destroy mummy nuts.

Mow ground cover before bloom.

If dormant scale monitoring indicated need, manage according to the Pest Management Guidelines:

Look for the following pests if they have been a problem in the past:

Manage if needed according to the Pest Management Guidelines.

Manage squirrels before April, if needed.

Text Updated: 07/17