GROW!T Commercial Coco Blocks vs Mother Earth Coco: Block vs Loose Costs Nearly 2x More
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GROW!T Commercial Coco Blocks vs Mother Earth Coco: Block vs Loose Costs Nearly 2x More
Same base material, coco coir, packaged in two genuinely different formats. Mother Earth ships loose in a bag; GROW!T ships as compressed blocks that expand in about a minute after saturation. Once normalized to price per cubic foot, the block format costs nearly double, and the reason is real, not just a markup.
The 30-Second Answer
- Mother Earth Coco, $7.92 per cubic foot, loose bagged coco, you fill your own containers.
- GROW!T RapidRIZE Blocks, $14.23-$14.78 per cubic foot, roughly 1.8-1.9x Mother Earth's cost, pre-formed compressed blocks.
- The premium buys convenience: no filling containers, blocks expand to shape in about a minute, less labor per plant at scale.
- Both are genuine, well-stocked options, this is a real format tradeoff, not one being a ripoff.
We stock both and can help you figure out whether the block format's convenience is worth the premium for your operation.
Why the price gap is genuine, not padding
Mother Earth's loose coco requires you to fill your own containers by hand, more labor per plant, but the lowest raw material cost per cubic foot. GROW!T's RapidRIZE blocks arrive compressed for efficient shipping and storage, then expand to their full planting shape in roughly a minute after saturation, essentially a pre-formed root zone ready to plant into directly. At real production scale, planting hundreds or thousands of units, that time savings per plant adds up in a way that matters more than the per-cubic-foot cost difference alone.
GROW!T's block sizing options
GROW!T offers RapidRIZE blocks in multiple sizes, from a compact 4"x4"x3" up to a 10"x10"x7" block, with the 6"x6"x4" and 8"x8"x6" sizes currently in stock here. The 8"x8"x6" block runs slightly higher per cubic foot than the 6"x6"x4" size, worth checking both if you're deciding between them for a specific container or planting setup.
Lab testing and quality control
GROW!T's Commercial Coco line is explicitly marketed as lab-tested for heavy metals and processed indoors to reduce debris and contaminants, a quality control detail worth noting for growers specifically concerned about contamination risk in bulk-sourced coco. This kind of testing detail is a genuine part of what production-scale buyers are paying for in the block format's premium, alongside the convenience factor covered above.
Transplanting considerations differ between the two formats
Loose Mother Earth coco fills whatever container shape you're using, giving you flexibility to match container size exactly to your growing stage and transplant up as the plant develops. GROW!T's pre-formed blocks come in fixed dimensions, meaning your container or tray needs to accommodate the block's shape rather than the other way around. This matters most if your workflow involves multiple transplant stages with changing container sizes; loose coco adapts to that naturally, while block format works best when you're planning around a smaller number of fixed transitions, or running a single block through the full cycle without transplanting at all.
Which one should you actually buy?
If you're hand-filling your own containers and want the lowest raw material cost, Mother Earth's loose coco is the better math, especially at smaller scale where the labor difference per plant doesn't add up to much. If you're planting at real volume and the time saved per plant genuinely matters, whether that's a commercial operation or just wanting less hands-on setup work, GROW!T's pre-formed blocks earn their premium through convenience rather than raw material quality.
What We'd Tell You at the Counter
If you brought us this exact question at the counter, we'd ask how many plants you're setting up and how much your own time is worth per plant. Small numbers, loose coco wins on cost. Larger numbers where setup time adds up, the block format's convenience genuinely pays for itself.
We sell both and would rather match the format to your actual planting volume than sell you whichever costs more per cubic foot. We don't upsell.
Frequently asked questions
Do coco blocks need to be buffered before use, the same as loose coco?
GROW!T's RapidRIZE blocks are described as pre-buffered and lab-tested for low ppm/EC, allowing nutrients to be applied the same day as planting; check the specific product description to confirm buffering status before skipping this step.
How long does it take a GROW!T block to expand?
Approximately one minute after saturation with water, according to the product's own description.
Can I stack smaller blocks on top of the larger 8x8x6 block?
Yes, GROW!T specifically markets this approach, using smaller blocks on top of or planted into the larger block as one method for larger flowering plants.
Is loose coco or block format better for hand-watering versus automated fertigation?
Both formats work with either watering method; the block format's main advantage is setup speed and consistency, which matters more at scale regardless of whether you're hand-watering or running automated fertigation afterward.
Which one does Modern Farms recommend?
It depends on your planting volume. Small-scale growers filling their own containers get better value from loose Mother Earth coco. Larger operations planting in volume often find the block format's time savings worth the per-cubic-foot premium.
Once your medium is set, dialing in your watering routine matters just as much; our watering guide covers that decision across different growing media. Because, as always, we don't upsell.
For informational and educational purposes only. This article is general horticultural guidance and is not medical, legal, or regulatory advice. Cannabis cultivation laws vary by country, state and locality, and growing cannabis may be illegal where you live. Always understand and comply with the laws and regulations that apply to you before growing any cannabis plant. Product names, pricing, and specifications reflect our current catalog and are subject to change; confirm current pricing and stock before ordering.