Bloom to Postbloom

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:

• Put up pheromone traps by March 15 and check according to the Pest Management Guidelines.
• Record results.

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.

• Gophers
• Ground squirrels
• Voles

Other Pests:

Insects:

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

Diseases:

• 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.