10 Best Liquid Lawn Fertilizers 2025 in the United States

Miracle-Gro Indoor Plant Food is a convenient liquid fertilizer designed specifically for indoor plants. Each pack contains two 8 oz. bottles, making it easy to handle and store. A key benefit is its instant nutrient release, which helps plants thrive quickly. It's versatile and can be used on a wide range of indoor plants, including houseplants, vegetables, and flowers. The fertilizer can be directly applied to the soil or mixed with water, offering flexibility in application methods.

The product is tailored for indoor use only, so it may not be suitable for larger outdoor lawn areas. Additionally, the coverage area is limited to pot size, which might not be ideal for users looking to fertilize extensive garden spaces. Miracle-Gro Indoor Plant Food is best for those with indoor plants seeking a simple and effective solution to boost plant health.

The Scotts Turf Builder Starter Food for New Grass Ready-Spray is a liquid lawn fertilizer specifically designed for new grass. It comes in a convenient ready-to-spray bottle, making it easy to apply while watering your lawn. With its 32 oz. bottle covering 600 sq. ft., this product is ideal for small to medium-sized lawns. It’s suitable for all grass types, which adds to its versatility.

The fertilizer is formulated to help new grass grow quicker and thicker, offering an effective start whether you’re seeding a new lawn, reseeding, or installing sod. The N-P-K ratio is balanced to support new grass growth. One of the standout features is its ease of use – simply attach it to a garden hose and spray, which saves time and effort compared to granular fertilizers that require spreading and watering separately.

The coverage area might be a limitation for larger lawns, requiring multiple bottles. Additionally, while it’s excellent for new grass, it might not be as beneficial for maintaining an established lawn. For those with smaller lawns looking to establish new grass quickly, this product is a solid choice.

The Sunday Green Machine Fertilizer is a liquid lawn fertilizer designed to make lawn care easy and effective. Its N-P-K ratio is 22-0-3, meaning it provides a strong dose of nitrogen for greening and growth, some potassium for overall lawn health, but no phosphorus. This is good for established lawns that don’t need phosphorus, but might not be ideal if your soil is phosphorus-deficient. The fertilizer includes helpful extras like seaweed and iron, which support deeper roots and improve resistance to stress or injury.

Application is simple and user-friendly thanks to the universal sprayer attachment that connects directly to your hose, letting you cover up to 10,000 square feet in about 15 minutes without any mixing or complicated steps. The liquid form allows nutrients to be absorbed quickly, which is great for faster results compared to granular fertilizers that release nutrients slowly. However, since it’s a fast-release fertilizer, you’ll need to reapply it every 4 to 6 weeks during the growing season for best results. It’s recommended for use when temperatures are between 60 and 89°F and to avoid fertilizing late in the year to prevent damaging your lawn.

This two-pack size provides plenty of product for medium to large lawns, but if you have a very large area or need a slow-release option, you might look for other fertilizers. This product is well suited for homeowners seeking a straightforward, quick-application fertilizer that promotes lush green growth with some added natural ingredients, especially if you want to avoid harsh chemicals.