Agriculture: Cole Crops Pest Management Guidelines

Rosette to Heading

This year-round IPM program covers the major pests of cole crops in the Central Valley, Central and Southern Coast, and southern desert of California.

About Rosette to Heading

What should you be doing during this time?

If you observe symptoms of Fusarium yellows or Verticillium wilt, note for future management.

Make nitrogen, phosphorus and potassium fertilizer decisions based on soil tests (however, these are generally applied preplant). Make nitrogen fertilizer applications based on quantities of residual soil nitrate.

Decide if hand weeding is needed to remove weeds before the canopy closes.

Monitor for pests and their damage and manage as needed according to the Pest Management Guidelines:

  • Aphids (cabbage aphid and other aphids)
  • Bagrada bug
  • Beet armyworm
  • Cabbage looper
  • Diamondback moth
  • Garden symphylan
  • Imported cabbageworm, except in southern desert where it is rarely a problem.
  • Cabbage webworm (in the southern desert, where it is an occasional problem)
  • Leafrollers
  • Thrips
Text Updated: 12/20