All-in-ones & kits 4 min read
All-in-one grow bag instructions: inoculate, colonise, mix and fruit, stage by stage
One bag, one syringe, about six weeks. Here is what you do at each stage and what the bag should look like while you wait.
AMK Store Est. 2026
Sub & grain fit for a kingdom.
Sterilised grain and premium CVA substrate for gourmet and medicinal mushroom growers. All-in-one grow bags, pre-poured agar, cultures and grow kits are on the way.
- Sterilised
- Injection-port grain bags
- Filter-patch sub bags
The staples
EVERY GROW STARTS WITH THESES STEPS
STEP 01• CHOOSE WHAT CULTURE YOU WANT TO GROW
The range
Everything for the grow.
Build your grow
How much grain do you actually need?
Tell us how much substrate you are filling and the spawn ratio you like. We will work out the grain, pick the cheapest mix of bag sizes, and bag the lot in one click.
Substrate
Grow docketAMK Store
2.5kg grain
+
5kg substrate
Total$0
Bag mix is the cheapest combination of our bag sizes that covers what you need.
Grain guide
Pick your grain.
Four grains, one standard. Here is how they compare, in grower terms.
How it fits together
Plate to harvest in four moves.
-
01
Inoculate
Introduce your culture to a bag of sterilised grain through the injection port.
Sterilised grain -
02
Colonise
Let the mycelium run through every kernel until the bag turns white.
Agar for clean starts -
03
Spawn to sub
Break up the colonised grain and mix it through your substrate.
Premium CVA substrate -
04
Fruit
Give it fresh air, humidity and light, then harvest your flush.
All-in-ones do 01 to 03 in one bag
The culture library Coming soon
Gourmet & medicinal, on the bench.
The library is being catalogued now. Join the drop list and you will hear the moment it opens.
The kingdom standard
Made properly, bagged properly.
Sterilised
Grain and substrate both arrive sterilised and sealed, ready to use.
A refined recipe
Our CVA recipe has been refined over years of growing for consistent results.
Nutrient-enhanced grain
Prepared with proven methods and carefully selected nutrients for a strong start.
Proper bags
Grain bags carry an injection port. Substrate bags breathe through a filter patch.
Questions
Good to know.
Something not covered here? Ask us and we will add it.
What is the difference between grain and substrate?
Grain is what you inoculate first. Once the mycelium has colonised it, that grain becomes spawn, and you mix it through the substrate: the bulk material your mushrooms fruit from.
Which grain should I choose?
Wheat is the all-rounder. Oats and milo break apart easily, and milo gives you the most inoculation points per kilo. Corn has the biggest kernels. The grain guide compares all four.
How much grain do I need for my substrate?
It depends on your spawn ratio. At 1:2 you use one part grain to two parts substrate, so 5kg of substrate takes 2.5kg of grain. The grow builder does the maths and picks the bag sizes.
What is an all-in-one grow bag?
Sterilised grain and substrate layered in one bag with an injection port. You inoculate the grain, let it colonise, then mix it through the substrate without opening the bag. They are coming soon.
How should I store my bags?
Keep them sealed, somewhere cool, clean and out of direct sunlight, and use them soon after they arrive.
When do cultures, agar and grow kits land?
They are being prepared now. Join the drop list and you will hear first.
Shop all
Sterilised grain, premium substrate and everything coming next.
Steps 01 to 03 · One bag
All-in-One Grow Bag
$401kg bag · $40 per kg
Sterilised grain and substrate layered in one bag. Inoculate, colonise, mix, fruit.
1
About
Our premium CVA and grain all-in-one system makes growing mushrooms easier and more convenient.
Every bag is carefully prepared using high-quality ingredients, providing a reliable, nutrient-rich environment designed to support strong, healthy mycelial growth from start to finish.
Details
- Layers
- Sterilised grain + substrate
- Bag
- Sealed, with injection port
One bag, one injection, one harvest
The all-in-one puts a layer of sterilised, nutrient-enhanced grain under a bed of our CVA substrate, in a single filter-patch bag with a self-healing injection port. You inject a culture into the grain, let it colonise, mix it through the substrate by kneading the sealed bag, and fruit from the same bag once it is white. No clean mixing step, no tub, no second bag. It is the easiest grow on the shelf and the one we point beginners to.
Sizes and prices: 1kg for $40 and 2kg for $60. Grain: Wheat, Corn and Oats. Prices in AUD, GST inclusive where it applies, shipped tracked Australia-wide.
Instructions
- Inoculate
Wipe the port with 70% alcohol, flame the needle and inject 2 to 5 ml of liquid culture into the grain layer at the bottom. Keep the bag upright so the culture sits in the grain.
- Colonise the grain
20 to 26°C, dark, filter patch uncovered. In one to three weeks the grain goes white. Break it up gently through the bag when it is mostly colonised.
- Mix
Knead the colonised grain through the substrate layer until it is evenly spread, flatten the bag into a brick and put it back in the dark.
- Fruit
When the whole bag is white (another one to three weeks), cut the bag open or cut a window, mist, give it fresh air and indirect light. Pins arrive in days; harvest about a week later. The full guide has pictures of each stage in words.
Which grain for an all-in-one?
We offer wheat, corn and oats. Oats break up most easily inside a sealed bag, which makes the mixing step simple; wheat is the dependable all-rounder; corn carries big reserves for a slower species.
Questions
About this product
Does the all-in-one come with a culture?
No. The bag is sterile and you add a liquid culture of the gourmet or medicinal species you want through the injection port.
How long does an all-in-one take?
About 4 to 8 weeks from injection to first harvest with oyster mushrooms, longer for slower species.
Do I open the bag to mix?
No. Mix by kneading the sealed bag so the colonised grain spreads through the substrate. Opening it is the one thing that lets contaminants in.
How many flushes?
Two is usual, three is possible. Rest and rehydrate the block between flushes.
Can I fruit it in a tub?
Yes. After it is fully colonised you can tip the block into a tub for a flat fruiting surface, but fruiting from the bag works fine and keeps it simpler.
Guides for this product
All guidesStart here 3 min read
Grow kit, all-in-one bag or bulk grow? Which one is right for you
Three ways in, three different trade-offs. Kits are for eating, all-in-ones are for learning, bulk is for volume.
Checkout
A few details, then you pay on a secure page.
The drop list
Join the kingdom.
Restocks, new cultures and first dibs on grow kits. One email when something lands, nothing more.