Free Shipping On all Orders $150+ Why Grain-Free Super Bags Are Changing Mushroom Cultivation
Rethinking What a Grow Bag Can Be
At Fullsend Organicks, we believe mushroom cultivation should be clean, simple, and accessible — without sacrificing quality or results.
That’s why we developed the Shit Master Mini and Shit Master 1000 Super Bags using our proprietary grain-free blend. These kits are designed for cultivators who want a smarter substrate: no visible grain, no prep, and no stress.
Instead of rye, millet, or other traditional grains, we use a manure super mix infused with BRF (brown rice flour) — a shelf-stable, pre-sterilized, fully hydrated foundation for functional or gourmet cultivation.
It’s a bold shift away from outdated methods — and it works.
What Makes These Super Bags Different?
Most mushroom grow bags use raw grain as a nutrient base. It’s effective, but it comes with trade-offs: increased contamination risk, shorter shelf life, and the need for refrigeration or lab conditions.
Our grain-free bags take a different path.
Each one contains a proprietary combination of:
- Manure super mix (pasteurized, pH-balanced)
- BRF for long-lasting nutritional value
- Hydrated, sterile straw for airflow and structure
Because this blend is pre-hydrated, sterilized, and sealed — the bags are ready to use straight out of the box. No soaking, shaking, or mixing required.
Minimal Effort, Maximum Results
With Fullsend’s Shit Master bags, setup is simple, and maintenance is low.
- No break-and-shake required (though optional if desired)
- No daily misting — just once every third day
- Fresh air exchange every other day
- No sterile lab needed — these bags are built for home or small-space cultivation
It’s a design that reflects our commitment to real-world growers — whether you’re working from a closet, greenhouse, or kitchen cabinet.
Two Sizes for Every Level of Grower
Shit Master Mini Super Bag
Compact, affordable, and designed for test runs or small-batch cultivators.
Shit Master 1000 Super Bag
Full-scale 3.5 lb bag for serious flush potential and broader colonization.
Both bags are optimized for legal cultivation of gourmet or functional mushroom species.
Built by Growers, for Growers
The Shit Master line wasn’t born in a lab — it was developed through years of hands-on testing by cultivators, educators, and mycology enthusiasts.
- Fully shelf-stable (up to 3 months)
- No refrigeration needed
- Clean, consistent substrate throughout
- Pre-sealed for easy shipping or vending
Whether you’re growing lion’s mane, oysters, or other functional favorites — these bags give you professional results with minimal effort.
Why “Grain-Free” Really Means Forward-Thinking
To be clear — we don’t use the term “grain-free” as a marketing buzzword. We use it because we’ve moved past the limitations of traditional grain substrates.
Our manure super mix + BRF combo provides reliable nutrition while eliminating:
- Whole grain visibility or clumping
- Early-stage bacterial bloom risk
- The need for extensive prep or hydration steps
It’s a smarter bag for a more sustainable future in mushroom cultivation.
Supporting Responsible, Legal Growing
These grow bags are intended only for legal use, including:
- Functional mushroom cultivation (e.g. lion’s mane, cordyceps)
- Gourmet mushroom growing (e.g. oyster, shiitake)
- Educational or taxonomic projects within legal frameworks
We proudly support our community of home cultivators, teachers, and wellness advocates — but we never sell or promote anything illegal.
This Is Fullsend Mode
Our Shit Master bags represent the entrepreneurial spirit of modern mycology. They’re designed for real-world results, not theory. Less prep. Less stress. More reliability. More innovation.
So whether you’re vending, educating, or just growing for yourself — step into cultivation that respects your time, your setup, and your goals.
This is next-level growing. This is Fullsend.
