10 Best Compost Fertilizers 2026 in the United States

Fox Farm Big Bloom Liquid Plant Food is a liquid organic fertilizer designed especially for flowering and fruiting plants. It contains natural ingredients like earthworm castings and bat guano, which are rich in organic matter and provide essential nutrients. The nutrient ratio (0-0.5-0.7 NPK) shows it offers very low nitrogen but moderate phosphorus and potassium, making it ideal to promote blooms and fruits rather than leafy growth.

Being a liquid, it allows plants to absorb nutrients quickly, which is useful if you want faster results. The product supports all stages of plant growth but shines best during flowering and fruiting phases. The texture is liquid, so it mixes easily with water for simple feeding, but it may need more frequent application compared to solid composts.

Since it’s made from natural sources, it fits well for gardeners looking for organic options, but those needing a more balanced fertilizer with higher nitrogen might need to supplement it. It is a great choice if you want an organic bloom booster that feeds plants efficiently and encourages vibrant flowers and fruits.

Scotts Green Max Lawn Food is a versatile lawn fertilizer designed for various grass types and can be used during different seasons. Its dual-action formula includes an iron supplement, which helps achieve a deep green appearance within just three days. The product's high nutrient content, including 27% nitrogen, facilitates robust grass growth.

Additionally, the inclusion of 5% iron enhances the greening process, making it particularly effective for those looking to quickly improve the aesthetics of their lawn. The product is also designed to cover a large area of up to 10,000 sq. ft., making it suitable for extensive lawns. Another practical feature is that it does not stain concrete or other hard surfaces when applied as directed.

Scotts Green Max Lawn Food may not be the best fit for those specifically looking for compost-fertilizers rich in organic matter and beneficial microbes, as it primarily focuses on lawn aesthetics rather than soil health. The texture is granular, which might be less ideal for users looking for finer compost materials.

Miracle-Gro Shake 'N Feed Tomato, Fruit and Vegetable Plant Food is designed to feed your vegetable, fruit, and tomato plants for up to three months with a single application. It contains a balanced nutrient mix, especially higher in potassium (15) and nitrogen (10), which supports healthy growth and fruit development. The added calcium helps plants build stronger cell walls, which can improve the quality and shelf life of your fruits and vegetables.

The fertilizer comes in granule form, making it easy to spread over garden beds or container plants and then water in. One container feeds about 128 square feet, which suits small to medium garden plots or several containers. It is a synthetic fertilizer rather than a traditional compost, so it may not contribute to soil organic matter or microbial health the way natural compost would. The granules break down as they release nutrients.

This product is ideal for gardeners looking for a convenient, long-lasting fertilizer that requires less frequent feeding, especially for vegetables and fruits. To improve soil texture or add organic matter, supplementing with compost might be beneficial alongside this fertilizer.