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2026–2027 Florida Citrus Production Guide: Citrus Disease Management Spray Timing Schedule

Megan M. Dewdney


This publication is best viewed as a PDF. The table may be found by clicking “View PDF” on the right sidebar.

Shaded areas represent suggested spray periods during flowering (February–March, with fruit set in March) and fruit development (April–December) against certain diseases. Refer to the annual Florida Citrus Production Guide for more details.

Spray periods are shown for oranges, grapefruit, ‘Valencia’, and tangerines and hybrids, as well as for optional applications.

The diseases below are listed in the table:

  • Black spot
  • Greasy spot
  • Canker
  • Melanose
  • Alternaria brown spot
  • Citrus scab
  • Postbloom fruit drop
  • Phytophthora root rot
  • Phytophthora brown rot
  • Algal spot