Agriculture: Almond Pest Management Guidelines

Bloom to Postbloom

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

About Bloom to Postbloom

What should you be doing during this time?

Manage navel orangeworm:

  • Ensure that mummies on the ground are destroyed before navel orangeworm emergence.
  • Put out pheromone traps, egg traps, or both:
    • Central and southern San Joaquin Valley by February 15 (pheromone) or March 15 (egg).
    • Northern San Joaquin and Sacramento valleys no later than the first week of March (pheromone) or March 15 (egg).

Monitor peach twig borer:

When rainy conditions promote disease, time pesticide applications according to the Pest Management Guidelines for:

Monitor for shot hole fruiting structures in leaf lesions as long as weather is wet. Apply fungicides if needed according to the Pest Management Guidelines.

Monitor San Jose scale:

  • Put up pheromone traps by March 1 and check according to the Pest Management Guidelines.
  • Record results (PDF).

Start to monitor for spider mites when mites are first seen in the lower center tree canopy.

  • Manage if needed according to the Pest Management Guidelines.

Monitor for vertebrates and manage as necessary.

Other Pests:


  • Brown mite
  • European red mite
  • Forest tent caterpillar
  • Fruittree leafroller (possible nut drop)
  • Leaffooted plant bug (possible nut drop)
  • Obliquebanded leafroller


  • Armillaria root rot (oak root fungus)
  • Bacterial canker
  • Phytophthora root and crown rot
  • Wood-decay fungi (fruiting bodies)

Manage orchard floor vegetation:

  • Mow ground cover before bloom for frost protection and to remove competing bloom.
Text Updated: 08/17