Big Roots Microbe Friendly Soil by The Soil King in 1.5 Cu. Feet Bag
Big Rootz Potting Soil by The Soil King in 40 Cubic Foot Bag
Big Rootz Soil by The Soil King Information Sheet
Big Rootz Potting Soil by The Soil King

Big Rootz By The Soil King Designed By Growers For Growers

Regular price$429.99
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Big Rootz® Potting Soil – Totes Ready to Ship Today!

Elevate your garden to the next level with Big Rootz® Potting Soil, the premium all-purpose soil designed for professional agriculture and perfect for home gardeners, organic growers, and commercial farmers. Trusted for its proven results, Big Rootz® focuses on what matters most: the health of your roots.

Why Big Rootz® is the #1 Choice for Growers

Developed by Patrick King, owner of Soil King Garden Center, Big Rootz® represents over 20 years of research and innovation. Carefully formulated with the purest soil amendments and mycorrhizae, it provides a microbe-friendly foundation to promote healthier, stronger plants.

Unlike sub-par soils that leave your plants vulnerable to pests, rot, and nutrient deficiencies, Big Rootz® is enriched with everything your plants need to thrive. It’s the soil designed by gardeners, for gardeners, delivering professional-grade results for all growers.

Key Features & Benefits

Backed by decades of research and refinement.
Designed by growers for growers, ensuring high performance.
Blended in the USA with premium quality ingredients.
Pesticide, heavy metal, and GMO tested, for a safe and sustainable choice.
✅ Infused with mycorrhizae to maximize root health and nutrient absorption.
Microbe-friendly, promoting a thriving soil ecosystem.

Rigorously Tested for Exceptional Quality

At Soil King, quality is our promise. Big Rootz® undergoes stringent quality assurance testing, ensuring that every tote contains only the best natural and organic materials. This makes it the trusted choice for growers who value clean, effective, and sustainable growing mediums.

Perfect for Any Growing Environment

Big Rootz® is versatile and ideal for use:

  • Indoors or outdoors.
  • In garden beds, greenhouses, or large-scale farms.
  • As a standalone soil or combined with other growing mediums.

Don’t wait—your plants deserve the best! Order your Big Rootz® tote today and see the difference healthy roots make in growing your strongest, most vibrant plants yet.

Totes are ready to ship now—get yours and grow with confidence!

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Biological... Beyond Organic®

Organic is just the start

RMBA is committed to provide natural and organic products that support healthy soils. Even if a product is not listed as 'organic' you can rest assured that it will help, not hurt your soil.

Don't take our word for it

★★★★★

This has been the best pumice i have ever used!!! Besides the great customer service (*****)

Ricardo S

McAllen, TX

★★★★★

Rocky Mountain BioAg has the best customer service! Prompt delivery and product support. Thanks !

Joe B

South Kingstown, RI

★★★★★

I have a greenhouse that unfortunately does not get the ideal sunlight due to its location on the north side of my home. I have been using Rocky Mountain BioAg’s Quantum Growth Organic Total for over a year and have seen a dramatic increase in plant growth and vegetable yield compared to past years. Highly recommend the product.

Jack C

Sarasota, FL

★★★★★

Excellent customer service, quick response, fast turnover and shipment of merchandise and product was exactly what was described on website and what I wanted. Great Company!

Jessica S

Harrisonburg, VA