30-0-4 Fertilizer
Lawn fertilizer (N + K)30-0-4 is 30% nitrogen, 0% phosphate and 4% potash by weight. To apply 1 lb of nitrogen per 1,000 sq ft, spread 3.33 lbs of product per 1,000 sq ft; a 50-lb bag covers about 15,000 sq ft at that rate.
What 30-0-4 Means
Nitrogen (N)
30%
15 lb per bag
Green color and growth
Phosphate (P₂O₅)
0%
0 lb per bag
Root growth, new seedlings
Potash (K₂O)
4%
2 lb per bag
Stress, drought and cold tolerance
Pounds shown are per 50-lb bag. The N:P:K ratio simplifies to 15:0:2. The remainder of the bag is carrier, filler, and secondary nutrients.
How Much 30-0-4 to Apply
Lawn feeding is measured in pounds of nutrient per 1,000 sq ft. Here's how much product hits each common target.
| Target | Product / 1,000 sq ft | Per acre | 50-lb bag covers | Delivers (N-P-K lb) |
|---|---|---|---|---|
| 0.25 lb N | 0.83 lb | 36.3 lb | 60,000 sq ft | 0.25-0-0.03 |
| 0.5 lb N | 1.67 lb | 72.6 lb | 30,000 sq ft | 0.5-0-0.07 |
| 0.75 lb N | 2.5 lb | 109 lb | 20,000 sq ft | 0.75-0-0.1 |
| 1 lb N | 3.33 lb | 145 lb | 15,000 sq ft | 1-0-0.13 |
What It's For
A high-nitrogen, no-phosphorus lawn fertilizer for routine feedings of established turf.
When to Use It
Spring and fall feedings, 6–8 weeks apart.
Before You Spread It
- Check the slow-release share before using it in summer.
- Little potassium. Pair it with a potash source if a soil test calls for one.
30-0-4 Calculator
Enter your lawn size to get the total amount, or change the analysis to check a different bag.
Spread 3.33 lb per 1,000 sq ft, 16.67 lb for 5,000 sq ft (0.33 bags).
Delivers 1 lb N, 0 lb P₂O₅ and 0.13 lb K₂O per 1,000 sq ft. Never exceed the label rate.
Common Questions
How much 30-0-4 per 1,000 sq ft?
To deliver 1 lb of nitrogen per 1,000 sq ft, apply 3.33 lbs of 30-0-4 per 1,000 sq ft, or about 145 lbs per acre. Many applications use half that or less, and the product label rate always comes first.
What is 30-0-4 fertilizer used for?
A high-nitrogen, no-phosphorus lawn fertilizer for routine feedings of established turf.
When should I apply 30-0-4?
Spring and fall feedings, 6–8 weeks apart.
What do the numbers 30-0-4 mean?
They're the percentages by weight of nitrogen (N), phosphate (P₂O₅) and potash (K₂O). A 50-lb bag of 30-0-4 contains 15 lbs of nitrogen, 0 lbs of phosphate and 2 lbs of potash; the rest is carrier and other ingredients.
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