My bed has be thriving after applying grozone!!!
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GROZOME Worm Char
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- $28.00 USD
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Premium Fine Bamboo Biochar for Worm Bins & Vermicomposting
Turn your worm bin into a natural biochar charging system.
GROZOME Worm Char is a premium, precision-micronized bamboo biochar specifically sized for worm bins, vermicomposting, and composting systems.
Its fine, sand-like texture provides the grit worms naturally use during digestion while helping manage excess moisture, reduce odors, and moderate acidic conditions within the bin.
Unlike dry, dusty biochar, Worm Char comes pre-wetted for clean, easy scooping and spreading.
And there’s no need to pre-charge it.
Your worms do that for you.
As Worm Char moves through an active vermicomposting system, its highly porous carbon structure becomes populated with microorganisms and exposed to nutrients, enzymes, and organic compounds.
The result is biologically activated biochar incorporated directly into your finished worm castings.
Why Worm Keepers Choose GROZOME Worm Char
- Helps manage excess moisture
- Helps reduce unpleasant worm-bin odors
- Provides fine grit for worm digestion
- Helps moderate acidic conditions
- Pre-wetted for cleaner, low-dust handling
- Does not require pre-charging
- Becomes naturally activated by worms and microbes
- Adds biochar directly to finished worm castings
- Creates long-lasting habitat for beneficial soil biology once added to the garden
What’s Included
GROZOME Worm Char – 2 gal.
Premium precision-micronized bamboo biochar formulated specifically for worm bins, vermicomposting, and composting systems.
Reusable Airtight Bucket
Helps keep Worm Char clean and maintain its ideal moisture level between uses.
Measuring Scoop
Each scoop holds approximately ½ cup for simple, consistent application.
Simple to Use
1. Sprinkle
Sprinkle Worm Char across the surface of your worm bedding when adding fresh food or bedding material.
2. Mix
Lightly mix Worm Char into the upper portion of the bin.
A good starting point is approximately 1–2 scoops per feeding for a typical home worm bin.
Each scoop holds approximately ½ cup.
3. Let Your Worms Activate It
There is no need to pre-charge Worm Char with fertilizer, compost tea, or other amendments.
Worms, microbes, moisture, and decomposing organic matter naturally populate and activate the porous carbon over time.
Worm Char does not need to be added at every feeding. Adjust the amount based on your bin size, moisture level, and feeding volume.
For an overly wet, acidic, or odorous bin, apply a slightly heavier layer and gently work it into the bedding.
From Worm Bin to Garden
Once your worms have done their work, the fine bamboo biochar becomes incorporated throughout your finished castings.
The result is worm castings containing biologically activated, nutrient-rich biochar ready to move into your garden.
Use your finished biochar-rich castings:
- Around vegetables and flowers
- In raised beds
- In potting mixes
- Around trees and shrubs
- In compost and soil blends
- As a biological soil amendment
Premium Bamboo Biochar
Worm Char begins with sustainably harvested bamboo that is converted into premium biochar under carefully controlled pyrolysis conditions.
The result is a high-quality carbon material designed for both worm-bin performance and long-term soil health.
- 93% carbon
- Low ash
- Low volatile organic compounds
- Approximately pH 10.3
- Fine, precision-micronized particle size
- Pre-wetted for low-dust handling
- Made from sustainably harvested bamboo
- Made in the USA
It is premium biochar first and, by design, a worm-bin amendment.
Built for the Long Term
Biochar is an extremely stable form of carbon that can remain in soil for a very long time.
Once your activated Worm Char reaches the garden in finished worm castings, its microscopic pore structure continues to provide habitat for beneficial soil biology.
No Expiration Date
Stored properly, GROZOME Worm Char does not expire.
Keep the lid tightly closed between uses to preserve the ideal moisture level and keep the product clean.
Because the carbon itself is extremely stable, one bucket can be used over multiple seasons.
Naturally Better
- Made from sustainably harvested bamboo
- Pre-wetted for clean, easy handling
- No synthetic additives
- No pre-charging required
- Designed to support worms, microbes, and soil biology
- Made in the USA
Better From Bin to Soil
Worm Char works with the natural biology already at work in your worm bin.
Worms process it.
Microbes populate it.
Nutrients move into it.
Your finished castings carry it into the garden.
Premium carbon. Perfectly sized. Ready for worms.
Your worms activate it for you.
Customer Reviews
Overall rating: 4.8 / 5 from 17 reviews.
So far I have been using Grozome on my fancy Chrysanthemum collection, and the weather has been hot. However, they seem to have nice roots, white and fluffy after a couple of uses. I soak a bag of grozome in a 5 gallon bucket and use to water the plants, and I think they are looking good. Normally growers use a lot of fertilizer, but I have been using just a little organic feed, watering with grozome and my plants are looking healthy. I think it is helping the soil in the pots and the roots start to feed each other, so I don't need the chemicals.
GROZOME Bulk Plant Probiotics (50 lb.)
Store owner replied: Hey Lillian, Fantastic to hear that GZ is helping your mums weather the extreme NC heat this summer. Deep healthy roots are critical to in achieving vibrant, healthy plants without relying on excessive fertilizers. Thanks again for sharing your success story with us, and we look forward to being a part of your future gardening endeavors via the Chrysanthemum Club!
The orchids are LOVING the Grozome being added to their weekly/ bi-weekly watering routines. I have 13 plants currently blooming and preparing to bloom this season, which is a new record for me, YAY! (Winter is the blooming season for a lot of window-sill orchid growers. I'm planning to show off and brag about Grozome at the local orchid society's show and sale the first weekend of March.
After watering my houseplants with Grozome extract only 2 times my plants sent out new nice fresh growth, especially the Pothos, even my cactus, and the orchids bloomed!
I’ve had a Christmas Cactus for a few years with occasional blooms. After using GROZOME for the last couple of months the cactus exploded with multiple blooms.
Easy to use, all my plants love it, no burns.
WOW, Warm Char is super easy and works! I have added biochar to my wormbin in the past but it never made up all of the bedding. I found that it helped control odors and prevented the bedding from getting too hot when i added a lot of nitrogen rich material like ground flour to help speed up population growth. I got the idea from a youtube video in which the author experimented with adding biochar to the worms feed. The theory was that the biochar acted as a microbial reef and since composting worms eat microorganisms that have consumed food scraps the protective environment for the microbes resulted in more microbes and more feed for the worms. It worked well for me and seemed to allow me to feed more in a shorter period of time but breaking up the biochar can be a headache...this product saves me a lot of time.
I am really glad to learn of this product. It never occurred to me to use biochar in conjunction with vermicomposting, but as smell has always been the prime detractor indoors, this seems logical. And excited to see how adding Worm Char to bins will improve my worm casting supermix and how it will perform.
As you can see 👀 the grozome root activation and the charcoal has been great so far 👌
My crop this year has had noticeably improved resistance to powdery mildew. The only difference is that I used the grozome microbe product.
i really loved this product would highly recommend this product for others it really helped my plants
Works amazingly well
Awesome fast shipping . Yet to use but clear instructions and super excited
Thanks for the root grow I can tell it to early if I could have about a month then I can give another review so gorilla it's looking fine
Store owner replied: For our Root Activator, you should only use is once or twice in growing season. Remember, more is not more. Due to the acidity, adding more than what the directions suggest could throw off soil pH if you are not careful. Some folks actually need to low pH due to their native soil type, so this could be useful of a non-synthetic chemical means to do so. FUN TIP: Try using it (undiluted) on a pesky insect issue ;)
How come there's no information about which microbes/bacteria it's derived from? How do I know you're not using another product and then relabeling it and calling it your own name as if it's your own product but in reality you are using some cheap product that you break down into smaller batches and charging 10 times more for it?! None of your products disclose what they are made from. I find that to be very unprofessional and sneaky and not transparent about what your product is made from and what actually gives those benefits. For this exact reason myself and a few commercial growers are not going to use this products! BUYER BEWARE!
GROZOME Bulk Plant Probiotics (50 lb.)
Store owner replied: Hi Dick, Transparency is very important to us, second to quality and consistency though. On our Home page (in the main header) is the link to all our third-party testing reports (https://grozome.com/pages/analyses-quality-testing) which has the DNA reports on all the beneficial biology in GROZOME, which are updated annually. GROZOME has been applied to 40,000 acres this past Spring, to some of the largest organic and regenerative farms in America. We do not take this trust lightly. Our product is literally under the microscopy daily by our product team, our customers and our exclusive partner for big Ag distribution - Hiwassee Products. As far as ingredients, they are all listed on our website on the "what is GROZOME" page.
The orchids are LOVING the Grozome being added to their weekly/ bi-weekly watering routines. I have 13 plants currently blooming and preparing to bloom this season, which is a new record for me, YAY! (Winter is the blooming season for a lot of window-sill orchid growers. I'm planning to show off and brag about Grozome at the local orchid society's show and sale the first weekend of March.
Our Amish community of Greenhouse gardeners love this amazing product! Fantastic results!