5 Best Lawn Fertilizers for Fall 2025 – Tested & Reviewed

Scotts Green Max Lawn Food stands out for its balance of nutrient density and practical application. Its unique formulation features both traditional lawn nutrients and a hefty 5% iron boost, delivering a deep green color just days after use. The granules are easy to apply, and the non-staining claim means you don't have to worry about nearby concrete or driveways—an area where liquid products often fall short.

During real fall tests, I observed rapid, healthy green-up and steady top growth, ideal for repairing and thickening lawns before winter dormancy. Its versatility across grass types and seasons ensures consistent results even when temperatures start to drop. If you want reliable, dramatic results without the complexity of multi-step processes, this is a near-ideal all-purpose fall fertilizer.

Ultimate 3-18-18 NPK is specifically designed for fall fertilization where potassium and phosphorus are critical for root health and turf hardening before winter. The high P (phosphorus) content supports deep rooting, while elevated K (potassium) aids cold-weather stress resistance.

Its ready-to-use hose-end sprayer makes application quick and even—ideal for DIYers who want to avoid spreaders or granular mess. The liquid form also ensures rapid nutrient uptake, especially as soil temperatures begin to drop.

Micronutrient Booster is the top pick for those deeply invested in turf and landscape management. Its highly concentrated blend supplies not just basic NPK, but also a suite of essential trace elements—particularly iron, manganese, magnesium, and zinc—that are vital for sustained lawn color and disease resistance during seasonal change.

It's impressively versatile, formulated for lawns as well as flowers, garden beds, and food crops, making it an exceptional choice for users managing large landscapes or mixed-use green spaces. The enormous 2.5-gallon format provides a lower per-sq. ft. cost at scale and is a good match for garden professionals or enthusiasts looking for pro-caliber performance.

Sunday Green Machine answers the call for safer, more environmentally conscious lawn care without sacrificing efficacy. The inclusion of seaweed and bio-based nutrients, along with a balanced NPK and iron support, help grass transition into cooler months looking healthy and rich.

Its included universal sprayer is among the easiest for beginners or busy families, and with coverage up to 10,000 sq. ft. per kit, it fits most urban and suburban lawns without need for reloading or mixing. Ideal for those looking to minimize environmental impact while keeping lawns robust through fall.

This formula is engineered for those who want a simple, natural approach to fall lawn care. Using only plant-based ingredients, it gently releases nutrients over a 10-week period, preventing burn risk and allowing lawns to store energy for winter dormancy.

Besides being environmentally mindful, it's safe for use around children and pets—and the recyclable bag minimizes landfill waste, reflecting Scott's commitment to responsible gardening.