Home Back

Scotts Lawn Fertilizer Calculator

Fertilizer Calculation Formula:

\[ Amount = \frac{Area \times Rate}{Concentration} \]

square feet
lbs per square foot
percentage

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is the Scotts Lawn Fertilizer Calculator?

The Scotts Lawn Fertilizer Calculator helps determine the exact amount of fertilizer needed for your lawn based on the area size, application rate, and fertilizer concentration. Proper calculation ensures optimal lawn health without over-application.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Amount = \frac{Area \times Rate}{Concentration} \]

Where:

Explanation: The formula calculates the total pounds of fertilizer needed by accounting for the concentration of active ingredients in the product.

3. Importance of Proper Fertilization

Details: Correct fertilizer application promotes healthy grass growth, prevents nutrient runoff, and avoids lawn damage from over-fertilization.

4. Using the Calculator

Tips: Measure your lawn area accurately, check the recommended application rate on the fertilizer bag, and note the concentration percentage (N-P-K values).

5. Frequently Asked Questions (FAQ)

Q1: How do I measure my lawn area?
A: Break your lawn into simple geometric shapes, calculate each area, and sum them up. Alternatively, use online mapping tools.

Q2: Where do I find the application rate?
A: Check the fertilizer packaging for recommended rates, typically in pounds per 1,000 square feet.

Q3: What if my fertilizer has multiple nutrients?
A: Use the percentage of the primary nutrient you're targeting (usually nitrogen for lawns).

Q4: How often should I fertilize?
A: Typically 3-4 times per year for cool-season grasses, 2-3 times for warm-season grasses.

Q5: Can I use this for organic fertilizers?
A: Yes, but note that organic fertilizers typically have lower concentrations and may require different application rates.

Scotts Lawn Fertilizer Calculator© - All Rights Reserved 2025