LawnCare.dad FertilizerPro

Turf & Lawn Nutrition/Fertilizer Calculator for Homeowners

Search for your address, zoom in, then click Start Tracing Yard to draw your lawn boundary.

Select your grass type and program level, then enter your fertilizer bag details.

Fertilizer calculator

Trace your yard on the map above to get started.

Generic Plan · No soil test entered

Grass type

Program level

Annual N target

3.50

lbs N / 1,000 sq ft / yr

Typical per-app (normal)

0.5–1

lbs N / 1,000 sq ft

N credits

Clippings returned (mulch mowing)−0.75 lbs/M/yrOrganic matter > 4%−0.375 lbs/M/yrOverseeded with clover−0.5 lbs/M/yr

Responds well to heavy fall feeding. Avoid heavy rates in summer — high disease risk.

Bag weight (lbs)

N-P-K analysis (% on bag label - N required, P & K optional)

N - Nitrogen

P - Phosphorus

K - Potassium

Saved fertilizers

Spreader type

All values are stored locally in your browser — nothing is sent to a server.

Enter your soil test results to get a tailored fertilizer plan and seasonal application schedule.

Enter your soil test results to receive a tailored fertilizer plan, amendment recommendations, and a seasonal application schedule.

Grass Type *

Lawn Size (sq ft) *

Quality Goal

Lawn Age / Condition

ZIP Code

Climate Zone

State (for P regulations)

pH and organic matter are required

Soil pH *

Organic Matter (%)*

Enter a numeric value or select a category label - whichever your report provides

Phosphorus (P)

Potassium (K)

Your fertilizer plan based on the information you've entered above.