| How do I calculate how much fertilizer my lawn will need? |
| Divide rate of nitrogen desired by percent nitrogen in bag (first number of 3 on bag, use decimal form), then multiply answer found by square footage of lawn and divide by 1,000. EXAMPLE: 15-5-10 fertilizer, 7,000 sq ft, want to apply 1 lb. nitrogen/1,000 sq ft a. 1 lbs. divided by .15 = 6.66, round to 6.7 b. 6.7 multiplied by 7,000 = 46,900; divided by 1,000 = 46.9, or 47 pounds Therefore, need about 47 pounds of 15-5-10 fertilizer to cover entire lawn. |
