Fertilizer Schedule for USDA Zone 10
USDA Zone 10 covers areas with minimum winter temperatures of 30°F to 40°F. The growing season runs from January through December, with fertilizer applications from January through December.
Zone 10 Quick Facts
Temperature Range30°F to 40°F
Average Last FrostJanuary 31
Average First FrostDecember 15
Fertilizer SeasonJanuary to December
Lawn Fertilizer Schedule for Zone 10
Zone 10 lawns receive their first application in January and their last by December. Cool-season grasses (fescue, bluegrass) and warm-season grasses (bermuda, zoysia) follow different NPK ratios at each application.
| Month | Action | NPK |
|---|---|---|
| February | First application as temperatures rise | 15N 0P 15K N 15% Nitrogen: leaf and stem growth P 0% Phosphorus: roots and flowers K 15% Potassium: health and disease resistance Learn more about NPK |
| April | Spring nitrogen boost | 20N 0P 5K N 20% Nitrogen: leaf and stem growth P 0% Phosphorus: roots and flowers K 5% Potassium: health and disease resistance Learn more about NPK |
| June | Summer feeding | 15N 0P 10K N 15% Nitrogen: leaf and stem growth P 0% Phosphorus: roots and flowers K 10% Potassium: health and disease resistance Learn more about NPK |
| August | Late summer application | 15N 0P 10K N 15% Nitrogen: leaf and stem growth P 0% Phosphorus: roots and flowers K 10% Potassium: health and disease resistance Learn more about NPK |
| October | Fall fertilizer | 10N 5P 15K N 10% Nitrogen: leaf and stem growth P 5% Phosphorus: roots and flowers K 15% Potassium: health and disease resistance Learn more about NPK |
| December | Winter maintenance (if grass still growing) | 5N 5P 10K N 5% Nitrogen: leaf and stem growth P 5% Phosphorus: roots and flowers K 10% Potassium: health and disease resistance Learn more about NPK |
Garden Fertilizer Schedule for Zone 10
With a last frost around January 31 and first frost around December 15, zone 10 gardens have a 12-month window for fertilizer applications.
| Month | Action | NPK |
|---|---|---|
| January | Winter garden fertilizer | 10N 10P 10K N 10% Nitrogen: leaf and stem growth P 10% Phosphorus: roots and flowers K 10% Potassium: health and disease resistance Learn more about NPK |
| March | Spring planting fertilizer | 5N 10P 5K N 5% Nitrogen: leaf and stem growth P 10% Phosphorus: roots and flowers K 5% Potassium: health and disease resistance Learn more about NPK |
| May | Feed summer crops | 5N 10P 10K N 5% Nitrogen: leaf and stem growth P 10% Phosphorus: roots and flowers K 10% Potassium: health and disease resistance Learn more about NPK |
| July | Mid-summer feeding | 5N 10P 10K N 5% Nitrogen: leaf and stem growth P 10% Phosphorus: roots and flowers K 10% Potassium: health and disease resistance Learn more about NPK |
| September | Fall garden prep | 10N 10P 10K N 10% Nitrogen: leaf and stem growth P 10% Phosphorus: roots and flowers K 10% Potassium: health and disease resistance Learn more about NPK |
| November | Winter crop feeding | 5N 5P 5K N 5% Nitrogen: leaf and stem growth P 5% Phosphorus: roots and flowers K 5% Potassium: health and disease resistance Learn more about NPK |
States in Zone 10
5 states contain areas classified as zone 10. Your specific location within a state may fall in a different zone based on elevation and proximity to water.
FloridaCaliforniaHawaiiArizonaTexas