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Liquid vs granular lawn fertilizer explained
Sunday lawn fertilizer feeds your grass only the nutrients it needs for stronger roots, richer color, and real resilience. Granular formulas like Core Seagreen use slow-release nitrogen and iron to keep growth going for weeks without constant reapplication. Liquid fertilizer options like Iron Boost green things up fast, for results you can visibly see in days.
Both fertilizer formulas work for any grass type, any yard size, and anyone who just wants their lawn to look genuinely good. It just comes down to preference and application style.
How to apply lawn fertilizer the right way
- Pick a lawn fertilizer matched to your grass type and season
- Choose liquid fertilizer for fast greening or granular for sustained growth
- Apply lawn fertilizer evenly across your entire lawn
- Sweep any stray granules off hard surfaces back onto the grass
- Reapply according to fertilizer throughout the growing season
Want to go fully custom? Sunday custom lawn plans are built for your soil, climate, lawn size and lawn goals. Get your free lawn analysis now.
Lawn fertilizer questions worth asking before you buy
Q: What are the N-P-K numbers on a fertilizer bag?
N-P-K stands for nitrogen, phosphorus, and potassium. Those three numbers show how much of each nutrient is inside. Sunday's Lawn Strong, for example, runs a 24-0-3 ratio.
Sunday Tip: Most lawns do well without phosphorus, but brand new lawns can benefit from added phosphorus, like Lawn Starter.
Q: What is the difference between organic and synthetic lawn fertilizer?
A: Organic fertilizers feed soil biology more slowly while synthetic options deliver nutrients faster. Sunday lawn fertilizer, like Super Nitrogen, blends both approaches, with zero pesticides, so your grass and the ecosystem underneath both win.
Q: Is lawn fertilizer safe for pets and kids?
A: Sunday lawn fertilizers are formulated without pesticides. Once liquid fertilizer dries or granular fertilizer is watered in and the lawn dries, people and pets can head back outside.
Q: How often should I fertilize my lawn?
A: Apply lawn fertilizer every 4 to 6 weeks during the growing season, spring through fall. Granular options like Core Endurance provide up to 70 days of sustained growth between applications.
Q: When is the best time to fertilize my lawn?
A: Fertilize when grass is actively growing, ideally in spring and fall for cool-season grasses, and spring and summer for warm-season grasses. Apply early morning or evening when temperatures are between 50 and 85 degrees F for best absorption.
Q: Can lawn fertilizer burn my grass?
A: Yes, over-application or skipping watering after granular fertilizer can cause burn. Water thoroughly after spreading granules and apply liquid fertilizer to a well-hydrated lawn to keep your grass happy.