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The UC Guide to Healthy Lawns

When to fertilize


Turfgrass nutritional needs change from month to month because of temperature and moisture variations. Fertilize when turfgrasses are actively growing. Active growing periods vary by turf species and location. The last application should be 6 to 8 weeks before the likely date of the first frost.

What are the best months to fertilize for your situation?

Click on your growing region.

Map of California with 11 zones
  1. Northern California Coast
  2. Northern Inland Valleys
  3. Northeastern California Mountain Valleys
  4. Sacramento Valley
  5. San Joaquin Valley
  6. Central Inland Valleys
  7. Sierra
  8. Central California Coast
  9. Southern California Coast
  10. Southern California Inland Valleys
  11. Southern California Deserts
Hot spot for zone 1 Hot spot for zone 1 Hot spot for zone 2 Hot spot for zone 3 Hot spot for zone 4 Hot spot for zone 7 Hot spot for zone 5 Hot spot for zone 6 Hot spot for zone 8 Hot spot for zone 11 Hoy spot for zone 10 Hot spot for zone 9
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Statewide IPM Program, Agriculture and Natural Resources, University of California
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