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.
Includes 10lb block of Back to the Roots compressed Coconut Coir that expands to 51qt of potting soil. A balanced pH, which means it’s 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 we’ll donate a Grow Kit and STEM elementary school curriculum to a classroom of your choice.
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Back to The Roots Organic Coir, 51 Quart Expanding Soil, Great for Seeds and Potting
Original price was: $19.99.$16.08Current price is: $16.08.
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Reviews
5 reviews for Back to The Roots Organic Coir, 51 Quart Expanding Soil, Great for Seeds and Potting
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Shomit Mian –
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 health100% organic and safe for compostingNo mess, no odor — very beginner-friendly
mnew –
Perfect solution if you have limited space to work and still want a lot of soil
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.
Josefa V. –
Great Ingredient for DIY Soil Mixture
I’m always in search of the perfect soil blend that supports seed germination, seedlings, mature plants, and indoor and outdoor vegetables. The Back to the Roots expanding soil has become a key ingredient in my DIY mix.The directions suggest adding 7-10 gallons of water, but I use about half that. I place the 12x12x4 brick in a 21-gallon bucket and follow this process:• Pour on 2 quarts of water• Let it expand• Scrape off the slightly moistened soil• Sift• Repeat until the entire brick is siftedThis method avoids over-saturating the soil, separates out fibrous coconut husk, and leaves behind rich, airy, fluffy soil. The sifted fiber is debris-free and works beautifully as top dressing mulch.I’ve noticed slightly lower germination rates when using pure coco coir, and some seedlings tend to die off around the 3” mark. To improve results, I mix my sifted coir with vermiculite, perlite, and a bit of horse manure.One of the photos show the original brick material, sifted soil, and fibrous husk – all from the same process. The other photo shows the soil blend in use, in a batch prepared from an earlier coco brick using my sift/blend method. The video clip captures the sifted soil texture as it sprinkles from my hand into the bucket.I appreciate that this product is odor-free, 100% organic, and upcycled. My plants respond well to it, and it’s become a reliable part of my soil-building process.
Martha –
Good Quality Potting Mix, But Be Mindful of Mushrooms
recently purchased this potting mix, and overall, I’m quite satisfied. The soil feels light, airy, and well-draining, which made planting very easy. My plants seem to be thriving so far, and the mix retains moisture without feeling too soggy.However, about a week after planting, I noticed some small mushrooms popping up in the pot. While it initially worried me, I learned that this is common with organic-rich soil mixes. The mushrooms are harmless and indicate the presence of healthy microorganisms. I just removed them and adjusted my watering routine to avoid overwatering.Pros:• Light, airy texture• Holds moisture well without becoming compact• Perfect for indoor and outdoor plantsCons:• Mushrooms may appear due to the organic material• Requires careful moisture management to avoid fungal growth
Eli A. –
Top shelf coco coir
It’s a great item at a great price