What Are The Best Sustainable Soil Amendments in 2025

Organic, liquid compost soil amendment with activated humic acid.

The Farmer's Secret Soil Revitalizer is a 32-oz organic soil amendment, OMRI Listed for certified organic use. It's a liquid compost soil amendment containing activated humic acid, designed to boost the health of your soil and is perfect for fall application.

The Andersons HumiChar Organic Soil Amendment with Humic Acid and Biochar Covers 12,000 sq ft (12 lb

Amazon product: The Andersons HumiChar Organic Soil Amendment with Humic Acid and Biochar Covers 12,000 sq ft (12 lb)

Organic, sustainable worm castings fertilizer for healthier plant growth.

Back to the Roots Organic Worm Castings is a 5lb bag of natural fertilizer and soil enhancer for gardening. Made in the USA, it is an organic, sustainable soil amendment that enriches your plants and garden soil, promoting healthier and more vibrant growth.

Organic, odor-free fertilizer with Biochar for home gardening and seed starting.

Charlie's Compost is a 10lb bag of odor-free, organic fertilizer perfect for home gardens, raised beds, containers, and seed starting mix. It is enriched with Biochar, a natural soil amendment that enhances soil fertility, promoting healthier plants.

100% natural, nutrient-rich organic fertilizer for healthy plant growth.

This 2lb Kelp Meal Organic Fertilizer is a powerful soil amendment, perfect for plants, gardens, flowers, vegetables, and lawns. It's a 100% natural renewable product that's rich in essential vitamins and nutrients, providing an organic solution for gardeners aiming for lush, healthy growth.

Detailed guide on making garden amendments using locally sourced materials.

The Regenerative Grower's Guide to Garden Amendments is a comprehensive handbook that instructs readers on how to create mineral and biological extracts and ferments using locally sourced materials. The author, Nigel Palmer, provides detailed recipes, step-by-step instructions, and discusses the importance of soil health in sustainable growing practices.

Premium worm castings for enhanced plant growth and soil fertility.

Brut's Organic Worm Castings is a 30 LB bag of premium, all-natural soil amendment that provides essential nutrients for both indoor and outdoor plants. The nutrient-rich worm castings not only enhance soil fertility but also improve the health and growth of plants, making it an ideal plant food for potting soil and garden soil.

Organic soil amendment for enhanced plant growth and soil health.

The Andersons BioChar DG Organic Soil Amendment is a high-quality, eco-friendly product designed to improve soil health and plant growth. This 10 lb bag covers up to 5,000 sq ft and is made from 100% organic material, providing essential nutrients to the soil.

Odor-free compost and manure blend for enhanced plant growth.

This 40 lbs bag of Garden Magic Mix by Michigan Peat is a high-quality compost and manure blend designed to enrich your garden soil. It is packed with essential nutrients and minerals, providing an ideal environment for plant growth. The mix is odor-free, making it easy to work with and perfect for outdoor lawn and gardening use.

All-natural, nutrient-rich soil amendment for enhanced plant growth.

Down To Earth's Greenstone Metabasalt is a 5 lb box of all-natural soil amendment that enriches soil with trace minerals, iron, calcium, and magnesium. This organic product not only improves soil structure but also promotes plant health and growth.