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Back to the Roots

Back to The Roots Organic Coir, 51 Quart Expanding Soil, Great for Seeds and Potting

  • Based on 136 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, May 10
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Style: 100% Organic Coco Coir


Features

  • Includes 10lb block of Back to the Roots compressed Coconut Coir that expands to 51qt of potting soil. A balanced pH, which means its truly all-purpose. Use alone or as an amendment for anything in a pot or in the ground vegetables, flowers, herbs, and even starting seeds.
  • Expands to over 2 cubic feet
  • Peat Free OMRI Listed, assuring organic production, handling, and processing
  • 100% SATISFACTION GUARANTEE: If you are not satisfied or have any issues with this Organic Coconut Coir, just shoot us a note and our dedicacted customer support team will make sure we get you growing or send you a refund/replacement.
  • GROWONEGIVEONE Share a photo of your growing garden and well donate a Grow Kit and STEM elementary school curriculum to a classroom of your choice.

Description

Back to the Roots 100% Organic Coconut Coir Premium Expanding Soil block expands into 2 cubic feet of rich, fluffy, and nutrient-rich soil when you add water. Perfect for indoor and outdoor use, it enhances water retention and aeration, promoting healthy root growth and robust plant development. Say goodbye to heavy, messy soil bags — our coir brick is convenient to store and easy to use. This natural and sustainable substrate is your key to thriving plants and more vibrant potted plants and gardens.

Brand: Back to the Roots


Style: 51 Quart Expanding Soil


Item Weight: 10 Pounds


UPC:


Global Trade Identification Number: 48


Brand Name: Back to the Roots


UPC: 810667034948


Global Trade Identification Number: 48


Item Type Name: Coconut Coir


Manufacturer: Back to the Roots


Unit Count: 1632.0 Ounce


Style Name: 51 Quart Expanding Soil


Item Weight: 10 Pounds


Volume: 2 Cubic Feet


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, May 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Will buy again, easy to use
Title: Great Quality Coir for Gardening Review: This coir expanded nicely and made a light, clean growing medium for my plants. It holds moisture well without getting soggy and was easy to hydrate and mix into my garden beds. Great organic option for seed starting and containers. Would definitely buy again! ⭐⭐⭐⭐⭐ 🌱 ... show more
Reviewed in the United States on March 16, 2026 by Jamal
    • Perfect solution if you have limited space to work and still want a lot of soil
Review Image by hnew
Review Image by hnew
While this wasn’t my first experience working with plants, it was my first time needing to completely replace soil to rescue a plant from gnat-infested soil. I chose Back to the Roots Organic Coir, 51 Quart Expanding Soil because I wanted a clean, organic option that would help eliminate pests rather than reintroduce them. I also was working with a small space to replant. I did this in the bathroom. I placed the compressed block directly into a 27-gallon tote and added water let it expand and did a little chopping with a spatula. What stood out the most was just how much soil this product produced. Expanding the coir directly in the 27-gallon tote nearly filled the entire container, which really exceeded my expectations for a single compressed block. The soil has a rich, fine texture and looks evenly hydrated and well-aerated, as shown in the image. It was easy to work with and didn’t feel heavy or muddy, making it ideal for gently replanting without compacting the roots too tightly. Overall, this expanding soil made a stressful plant-rescue situation feel manageable and successful. The lightweight texture retains moisture while still draining well, which is especially important when dealing with fungus gnats. Since switching to this soil, the plant feels more stable and supported, and the surface stays clean instead of soggy. For anyone needing to refresh contaminated soil, repot stressed plants, or simply wants a clean and reliable organic growing medium, Back to the Roots Organic Coir delivers excellent volume, quality, and peace of mind. Picture is of the newly repotted plant. ... show more
Reviewed in the United States on December 18, 2025 by hnew
    • Earthworm 🪱 safe
I bought this expanding coir soil specifically to use as bedding for my vermicomposting bin, and it turned out to be a perfect choice. Once hydrated, the texture becomes soft, fluffy, and holds moisture evenly—exactly what earthworms need to breathe, move, and thrive. There are no additives or chemical smells, which gave me peace of mind knowing my worms were in a safe, organic environment. What I liked most is how clean and easy it is compared to typical dirt or peat-based mixes. It expands way more than you expect, so one block goes a long way. The worms burrowed into it immediately and started breaking it down, and I noticed activity and casting production increased within just a few days. It also controls odor naturally and keeps good airflow in the bin. If you’re into vermicomposting or setting up a worm farm, this is one of the best bedding bases you can start with—light, airy, and holds the perfect amount of moisture without getting muddy or compacted. Highlights: Expands a lot with just water (cost-effective) Ideal moisture retention and airflow for worm health 100% organic and safe for composting No mess, no odor — very beginner-friendly ... show more
Reviewed in the United States on October 25, 2025 by Shomit Mian
    • Best coco brick I had on amazon
Review Image by Mikhail
Some of the best coco brick I have found over the last few yrs. Not only is it best bang for the buck... the quality is amazing. I mix it with my fox farm and ocean forest along with other amendments and nutes... i also use in the bottom inch of fabric pots for wicking purposes. Less of the smaller particles and more of the longer fibers which is what were looking for. Filled up my whole bin i was amazing by how much it expanded. Awesome product you will not be disappointed! For 20$!? Its best I had on amazon ... show more
Reviewed in the United States on April 5, 2026 by Mikhail
    • Good product, unacceptable packaging
Review Image by Sean Boshra
Review Image by Sean Boshra
The soil itself looks fine and usable, but the packaging was poor. It was shipped together with another item inside a plastic bag, which caused the bag to tear and the product to get damaged. This could easily be avoided with proper packaging, especially for heavier items like soil.
Reviewed in the United States on March 24, 2026 by Sean Boshra

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