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A small 2 lb bag for shoebox tubs, trays, casing layers and top-ups. Pasteurized, pre-hydrated CVG that's ready to mix with colonized grain spawn the moment you open it.
Price: $9.00
Myco Labs Premium CVG is a pasteurized, ready-to-use bulk substrate: coco coir, vermiculite and gypsum, buffered with hydrated lime and finished with Azomite trace minerals. It arrives already hydrated to field capacity, so the only thing you add is colonized grain spawn. The 2 lb bag is sized for small grows: a shoebox tub, a small tray, a casing layer or a top-up, without opening more substrate than you need.
Each batch is pasteurized to knock back competitors while keeping the natural biology a bulk grow depends on.
Squeeze a handful and a drop or two comes out, no more. There's nothing to measure or add.
Lime and gypsum steady the pH and Azomite supplies trace minerals, so texture and moisture repeat from one tub to the next.
Use fully colonized spawn and massage the bag until the kernels separate.
Empty the bag into a clean tub or tray and crumble any clumps from shipping.
Blend substrate and spawn evenly, then level the surface and press it down lightly.
Cover it and leave it alone until the surface turns white, usually 2–3 weeks, then switch to fruiting conditions.
Pair it with spawnMix it with a bag of colonized grain spawn, or make your own with our sterilized rye grain spawn bags. Need a tub? See monotubs.
A base of coco coir, vermiculite and gypsum, with hydrated lime to buffer the pH, mineral water and Azomite trace minerals. It's pasteurized and pre-hydrated before it ships.
No. Every bag is hydrated to field capacity. Open it, break up any clumps and mix in your colonized grain spawn.
Dark brown, moist and crumbly, with light flecks of vermiculite. A squeezed handful should give a drop or two of water, not a stream. Some clumping from shipping is normal.
Pasteurized. That reduces competing microbes while keeping the substrate's natural biology, which is the standard approach for bulk substrate. Your grain spawn is the part that gets sterilized.
It's enough for a shoebox tub or small tray, a casing layer over colonized substrate, or topping up a grow. At 2:1 to 3:1 it pairs with roughly 1 lb of colonized grain, about one quart jar.
Yes. Mix it through as your bulk substrate, or spread a thin layer over colonized substrate as a casing.
Keep them sealed somewhere cool and dry for the short term, or refrigerate sealed bags for up to 6 months. Don't freeze it, and avoid heat swings that cause condensation inside the bag.
When it arrives: Keep the bag sealed until you're ready to spawn. If you won't use it within a few weeks, refrigerate it, but never freeze it.