How to Apply Lawn Fertilizer for Best Results
Applying lawn fertilizer correctly helps promote thicker growth, stronger roots, and healthier grass throughout the growing season. Whether you’re feeding your lawn in the spring, maintaining growth in the summer, or preparing turf for fall and winter, proper timing and application techniques ensure nutrients are used efficiently and evenly.
This guide covers when to apply fertilizer, how much to use, and best practices for spreading and watering.
When to Apply Lawn Fertilizer
Lawn fertilizer can be applied at multiple times during the year, depending on your lawn’s needs and seasonal goals.
- Spring applications support early growth and help lawns green up after winter.
- Summer applications help maintain colour and density during periods of active growth.
- Fall applications support root development and help lawns prepare for winter. Fertilizer is typically applied a few weeks before the first hard frost and can also be applied as a dormant feeding in late fall once growth has slowed.
Avoid applying fertilizer to frozen ground or before heavy rainfall, which can reduce effectiveness and lead to runoff.
How Much Fertilizer to Apply
Application rate depends on the condition of your lawn:
-
Standard application:
Apply 2 kg per 100 m² (1,075 ft²)
One 7.14 kg bag covers approximately 330 m² (3,550 ft²) -
Lawns in poor condition:
Apply 4 kg per 100 m² (1,075 ft²)
This higher rate provides additional nutrients to support recovery and improve turf density
Always measure your lawn area before applying fertilizer to ensure proper coverage and avoid over‑application.
Using a Spreader for Even Coverage
For the most uniform results, fertilizer should be applied using a lawn spreader. This helps distribute nutrients evenly and reduces the risk of streaking or burning.
Recommended spreading method:
- Set your spreader according to the required application rate.
- Apply half of the fertilizer by spreading lengthwise across the lawn.
- Apply the remaining half crosswise over the same area.
- Shut off the spreader when stopping or turning to prevent excess fertilizer buildup.
This crisscross method ensures even coverage across the entire lawn.
Watering After Application
For best results, water thoroughly after application. Watering helps move nutrients off the grass blades and into the soil where roots can access them. This step is especially important during warmer or drier conditions.
Avoid fertilizing immediately before heavy rainfall, as nutrients may wash away before being absorbed.
Tips for Successful Fertilizer Application
- Apply fertilizer when grass is dry for smoother spreading
- Avoid overlapping passes
- Sweep fertilizer off hard surfaces like sidewalks and driveways
Proper fertilizer application supports consistent growth, improved colour, and a healthier lawn across all seasons. By following correct rates, timing, and application techniques, you can help your lawn perform its best from spring through fall.