★★★★★
Pushed the liquid in the little port. Waited. White stuff everywhere. Then mushrooms. Like magic almost.
Travis Y.
All in One Mushroom Grow Bag for Multiple Flushes
$80.00$96.00Half off your 3rd bag
As low as $5.33 per flush · up to 15 flushes
Five pounds of pressure-sterilized substrate and grain in one bag.
Free shipping, every orderContamination Free GuaranteeShips within 24 hours
Pressure Sterilized
Just Add Spores
3-5 Flushes Per Bag
No Equipment Needed
Five pounds of pressure-sterilized substrate and grain in one bag. Our HB4 formula runs 50/50 millet and rye pre-spawn layered with coco coir, vermiculite, gypsum, and worm castings, and other nutrients, balanced to pH 6.0-6.5. No pressure cooker. No still air box. Just inject your spores or liquid culture through the self-healing port, let it colonize, and harvest.
We batch-test every bag before it ships. The Unicorn 10T-injection, .2 micron filter patch handles gas exchange throughout colonization and fruiting. Most growers see their first flush in 6 to 12 weeks. The bag supports 3 to 5 flushes total.
If your bag arrives contaminated, or contaminates before you inoculate it we replace it. That's our contamination guarantee.
What's in the Box
Grain pre-spawn (50/50 millet and rye berries) + HB4 substrate (coco coir, vermiculite, gypsum, worm castings) in a Unicorn 10T-Injectable bag with a .2 micron filter patch.
Specs & Yield
Dimensions: 8" x 5" x 19" sealed. Total weight: 5 lbs. Expected dry yield: 1-2 oz per flush, 3-5 flushes per bag. pH balanced at 6.0-6.5.
Storage & Handling
Store at 60-70F in a clean, dark area. Do not refrigerate. Inoculate within 30 days of receipt for best results.
Shipping & Guarantee
Ships within 24 hours via USPS Priority. Free shipping on orders over $50. If your bag arrives contaminated or fails to colonize due to a manufacturing defect, we replace it at no cost.
From the grow room
Watch me walk you through it.
The same answers I give every grower who asks.
Why I angle the grains
I angle the grains so you can inoculate straight in with a short needle, and the mycelium spreads out from there as a sphere. It also leaves more substrate than grain in every All-in-One, which grows a stronger mushroom.
2:22Real bags, real grows
-
Pinning out of the bag -
A flush under the lights -
The bags in a kitchen -
Fully colonized and ready
How to grow it
Your first grow, step by step
From a sealed bag to your first harvest, about two and a half to three months. No pressure cooker, no guesswork.
Jamo, founderI'll walk you through the whole grow, start to harvest.
1
Attach the needle
Twist the sterile needle onto your syringe until it is snug. It ships ready to use, so there is no flame needed.
2
Sanitize the port
Wipe the gray injection port, and your culture's lid, with 70% iso. Let it dry.
3
Inject your culture
Push the needle through the port and slowly inject your spore syringe or liquid culture into the grain.
JamoFounder tip
Your needle ships EO sterilized, so don't flame or wipe a fresh one. Wipe the bag's port and your culture lid with 70% iso, then inject opening upward so you never push rubber into the culture. Only flame a needle you are reusing.
4
Watch it colonize
White mycelium webs out through the grain. Keep it 72 to 78°F, out of direct sun, and sealed.
White is healthy. Green means contamination.
5
Shake once
Around week 3, when the grain is part colonized, give it one good shake to spread the mycelium. Then leave it about three more weeks to fully run through the bag.
JamoFounder tip
Set it where you will see it, so you catch any contamination early, but out of the way for about three weeks. No sunlight needed, and no pitch dark either, just out of direct sun. Comfortable for you is comfortable for the mycelium. Don't soak it, and don't let it dry out.
6
Into the gallon
Once it has fully colonized, cut the bag along the seam and drop it into a clean gallon jug. Tape it shut so it makes its own little microclimate.
Real grow. Jamo's own gallon tek.
7
Fruit & harvest
Give it a little fresh air each day, cap off for more, cap on for less. In about three weeks pins turn into mushrooms. Pluck before the veil opens, then fold the bag back up and go again.
First grow? A few things worth knowing
- No gallon? Use a tent. A small countertop grow tent (AC Infinity, Vivosun) gives you more control. Dial in temperature, humidity, and airflow, and drop the temp a few degrees to kick off pinning.
- Giving it air. Fresh air is what triggers pinning and keeps it healthy. With the gallon, crack the cap a little; in a tent, run the fan on low. A bit each day is plenty.
- Temperature. Colonize at 72 to 78°F. Fruit a little cooler, around 60 to 75°F.
- Humidity & water. Keep it humid while fruiting. Mist when the surface looks dry, not on a clock, with distilled or RO water.
- Light. Indirect light is plenty. Keep it out of direct sun, which dries the cake out.
- Health check. White mycelium is healthy. Green means contamination.
- Keep going. Rehydrate after each harvest. Most bags give 3 to 5 flushes.
JamoFounder tip
Honestly, I just set mine on the kitchen counter and let it go. As long as it gets a little natural light and is not baking in direct sun, you are good. Comfortable for you is comfortable for the mushrooms.
What's Inside
Six ingredients. Zero guesswork.
The Payoff
What happens when all six ingredients work together.
3-5 Flushes Per Setup
Rehydrate the cake and fruit again. One setup keeps producing for weeks.
Dung & Coir Loving Species
Dung-loving and gourmet varieties grow in the same substrate. One formula, broad range.
Contamination Guarantee
If your grain pre-spawn contaminates before inoculation, we replace it free. That's on us, not you.
Substrate Mix
The bulk growing medium where mycelium colonizes and fruits emerge. Our HB4 blend ships hydrated and ready to use.
Coco Coir
Water retention and structure. Holds moisture evenly so mycelium never dries out.
Vermiculite
Aeration and moisture buffer. Creates air pockets for healthy mycelial growth.
Gypsum
Calcium and sulfur. Prevents substrate clumping and adds essential minerals.
Worm Castings
We use these instead of manure. Same slow-release nutrients, zero smell, lower contam risk.
Grain Pre-Spawn
The colonized grain that carries mycelium into the substrate. We blend two grains 50/50 for a reason.
Millet
Small grains mean more inoculation points. Fast colonizer that gets the network started quickly. Montana-sourced.
Rye Berries
Nutrient-dense with high starch content. Holds moisture longer for sustained mycelial growth. Colorado-sourced.
The Payoff
What happens when all six ingredients work together.
3-5 Flushes Per Setup
Rehydrate the cake and fruit again. One setup keeps producing for weeks.
Dung & Coir Loving Species
Dung-loving and gourmet varieties grow in the same substrate. One formula, broad range.
Contamination Guarantee
If your grain pre-spawn contaminates before inoculation, we replace it free. That's on us, not you.
Substrate Mix
The bulk growing medium where mycelium colonizes and fruits emerge. Our HB4 blend ships hydrated and ready to use.
Coco Coir
Water retention and structure. Holds moisture evenly so mycelium never dries out.
Vermiculite
Aeration and moisture buffer. Creates air pockets for healthy mycelial growth.
Gypsum
Calcium and sulfur. Prevents substrate clumping and adds essential minerals.
Worm Castings
We use these instead of manure. Same slow-release nutrients, zero smell, lower contam risk.
Grain Pre-Spawn
The colonized grain that carries mycelium into the substrate. We blend two grains 50/50 for a reason.
Millet
Small grains mean more inoculation points. Fast colonizer that gets the network started quickly. Montana-sourced.
Rye Berries
Nutrient-dense with high starch content. Holds moisture longer for sustained mycelial growth. Colorado-sourced.
Swipe to explore
Common Questions
Before you buy.
What species can I grow with this bag?
Dung and coir loving species. Our worm casting blend provides the nutrient profile these species thrive on — built for supplemented, enriched substrates. Not intended for hardwood-loving gourmets like oyster, lion's mane, or shiitake.
How long from inoculation to first harvest?
6-12 weeks total. 3-6 weeks for grain colonization, then 2-3 weeks for fruiting conditions to produce pins. Temperature and strain both affect speed.
What if my bag gets contaminated?
If your bag arrives contaminated or fails to colonize due to a manufacturing defect, we replace it at no cost. Email us with your order number and a photo, and we'll get a new bag shipped within 48 hours. Read our full contamination guarantee.
Do I need any equipment to get started?
Just a spore syringe or liquid culture. No pressure cooker, no still air box, no laminar flow hood. Inject through the port and you're done.
How many flushes can I expect?
Most growers pull 3-5 flushes. Each flush produces dense, vigorous fruit bodies. Rehydrate the cake between flushes and keep humidity up for the best results.
What temperature does my grow space need to be?
72-78F during colonization, 60-75F during fruiting. A closet shelf or spare room works. No climate-controlled setup needed.
Want the layers separately?
Same formula. More control.
Same competition-proven ingredients, broken out for growers who want to dial it in.
HB4 Worm Based High Performance Substrate
Our worm-casting substrate. Bring your own grain.
$28.00
Multi Grain Matrix (4 lbs)
50/50 millet and rye. Ready to inoculate.
$28.00
From the grower
I pack every bag myself.
Sterilized substrate, sealed clean, and watched from grain to ship. If a bag ever shows up contaminated, I make it right.
Contamination Free Guarantee
Jamo, grower. Elk Mountains, Colorado.
From growers
What growers tell me.
A few I picked out. The rest are below, nothing filtered.
★★★★★
Really fun and way easier than I thought it would be.
verde88
★★★★★
For what it costs the bag basically covers itself off the first flush.
Kyle Donnelly
★★★★★
Uses worm castings instead of manure so it barely smelled like anything, which my wife was glad about.
Tonya D.
★★★★★
The substrate looked healthy the whole way through, never got nervous about it. Three good rounds out of it.
thrifty_t
★★★★★
Ordered on a Sunday night not expecting much and it was on my porch by Wednesday.
Soo
All 19 reviews
What Growers Say
Hear it from the grow room.
Join the Club
The Grower's Club
Strain notes, troubleshooting guides, and harvest showcases from real growers. Starts in your inbox, grows from there.
No spam. Just grows. Unsubscribe anytime.