How to Fertilize Your Lawn

Fertilize your lawn at the very least once a year. Ideally though, you should fertilize at least twice—once in the fall, at the end of the growing season and once in the spring before growing season. Some lawns may require an application in the middle of the growing season. Always check the fertilizer package to ensure that you have the appropriate fertilizer for the time of year, as many blends are formulated for specific seasonal use.

To apply granular fertilizer, follow the instructions on the package. To make the job easier and more efficient, use a broadcast spreader. This particular type of spreader covers the most area evenly and quickly. Pour the recommended amount of fertilizer into the spreader hopper.

Helpful Tip

Measure your yard in square feet. Instructions on the fertilizer package will inform you of how many pounds or ounces (for liquid fertilizers) per square feet need to be applied. For reference, 10 lbs. per 1,000 sq. feet is a common application.

Don’t fill the spreader hopper over your lawn. The fertilizer can spill, and in high concentrations, actually harm the grass instead of helping it

Apply the fertilizer in the same way you would mow. Using a sidewalk, driveway or other non-grass surface as a guide and a starting point, begin pushing the spreader parallel to the surface and work your way across the lawn, turning at each end and directing the spreader alongside the row you just completed so that coverage almost overlaps. The fertilizer drops from the hopper and is dispersed as you move. Keep a slow, steady pace. Read your spreader’s manufacturer’s instructions for exact directions on how to use it. Many models allow you to set the amount that is dispersed. Be careful that you don’t over-fertilize by checking the fertilizer package to verify the recommended spreader setting.

Safety Alerts!

Any fertilizer spilled on roads or sidewalks should be cleaned up promptly. Improper use of fertilizers may contribute to pollution of lakes and groundwater, so use a broom to sweep up spills immediately.

Wear gloves, safety glasses and a dust mask when handling fertilizers.

Keep fertilizer away from open flames or any source of extreme heat.

You can also spread granular fertilizer by hand or with a hand spreader. This is ideal for small areas of turf where a broadcast spreader would deliver too much fertilizer for the area.

To apply liquid fertilizer, follow manufacturer’s instructions on how to prepare the fertilizer (they require dilution) and how to connect the fertilizer bottle to your garden hose. Turn on the water to your hose and then open the valve on the fertilizer bottle. Walk at a slow, steady pace to cover the entire lawn evenly, spraying from side to side.

After applying the fertilizer, water the lawn immediately with a garden hose, unless directed otherwise by the package instructions. Clean out fertilizer residue from your spreader with a garden hose, taking care to prevent the runoff from flowing into nearby soil or drains.

Good work! Now you know how to fertilize your lawn and keep it growing and green.