Made to order in front of a laminar flow hood · Ships Canada-wide from Alberta
Cactus Cowboys Mycology Supplies
LEARN TO GROW

Most first grows fail on
contamination, not skill.

This is the whole chain, in order, with the honest version of what each step costs you in effort. Read it before you buy anything — it will probably save you money.

The chain, plate to fruit

Every product we sell is one link in this chain. The further left you start, the more control you get and the more sterile work you do.

1 · Agar

HARDEST · MOST CONTROL

A petri dish of nutrient jelly. You isolate a clean piece of mycelium, grow it out, and store genetics that will outlive any single grow. This is where growers clean up a culture that has gone weak.

You need: Still-air box or flow hood, scalpel, patience.

2 · Liquid culture

Live mycelium suspended in nutrient broth, in a jar with a self-healing injection port. You draw it into a syringe and inject grain through the port — no vessel ever gets opened.

You need: A syringe, an alcohol wipe, a steady hand.

3 · Grain spawn

THE COMMON SHORTCUT

Sterilized grain fully run through with mycelium. Buy it colonized and the riskiest sterile step is already behind you — you just break the bag up and mix it into bulk substrate.

You need: Clean hands and a tub. That is genuinely it.

4 · Bulk substrate

Coco coir, vermiculite and gypsum — the bulk food the mycelium spreads into before it fruits. This is what turns a small bag of spawn into a real harvest.

You need: A fruiting chamber or a monotub.

The shortcut · All-in-one bag

CURRENTLY SOLD OUT

Steps 1 through 4 already done and sealed in one bag. Nothing sterile is ever in your hands. All four species are out of stock right now — colonized grain spawn plus a CVG bag is the closest in-stock equivalent, and it yields more.

Shop grain spawn instead

The four ways a first grow actually dies

Opening it too early

An impatient cut into a bag that isn't fully colonized invites everything in the room to compete. If it isn't solid white, wait.

No fresh air exchange

Stale, CO₂-heavy air gives you long stems and deformed fruit. Humidity without airflow isn't a fruiting chamber, it's a terrarium.

Working in moving air

If you're doing sterile steps yourself, a still-air box beats a kitchen counter every time. Air currents carry spores you can't see.

Buying the wrong link

Agar is not a beginner product. Starting three steps earlier than your setup allows is the most expensive mistake on this page.

Liquid cultures from
$19.99
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