Cloud920® All-in-One Mushroom Grow Bag

The Cloud920© All-in-One Mushroom Grow Bag is a sterile, ready-to-inoculate cultivation bag. Inside: a layer of sterile corn spawn on the bottom and a substrate mix on top, sealed in a microfilter bag with a self-healing injection port. Outside the bag, the choice is yours: which Psilocybe cubensis strain do you want to grow?

How It Compares

Free Strain Choice — The Real Difference

Pre-colonized grow kits come with one fixed strain, chosen by the producer. The Cloud920© All-in-One Bag arrives empty and sterile — you pick the Psilocybe cubensis strain that fits what you actually want to grow. Liquid culture or spores from our range, or a syringe you sourced yourself: the bag does not care, as long as it is clean.

What You Can Inoculate It With

The bag is sterile — it does not care what you inject, as long as it is clean and viable. Here is what works, ranked by reliability. Always use the growing conditions (temperature, humidity, fruiting trigger) that apply to the specific Psilocybe cubensis strain you choose — strains differ, and the bag adapts to all of them.

How To Use It (Quick Version)

The Cloud920© bag is sterile and ready. All it needs is a clean inoculation through the self-healing port.

Inject 2.5-5cc through the injection port, store the bag in a dark place at 20-24°C, and let the mycelium colonize both layers. No opening required until you see full colonization.

About the Harvests

The Cloud920© AIO 2000ml typically delivers 400-800g fresh mushrooms total across a minimum of two flushes. The 4000ml XXL version scales up to 600-1200g fresh total, also across at least two flushes. First flush is the largest; the second adds another 30-40% of the total. Yields depend on strain, environment and grower experience — the lower end is what we stand behind, the upper end is what a well-dialled-in grow can reach.

What’s Inside the Bag

• Sterile corn spawn (bottom layer)
• Substrate mix with coco coir and vermiculite (top layer)
• Self-healing injection port
• 0.2μm microfilter for gas exchange
• Sealed, sterile, room-temperature stable for several months out of direct sunlight

FAQ

Do I need to purchase spores or liquid culture separately?

Yes. The bag contains the substrate, allowing you to select the strain separately. Liquid culture is highlighted as the recommended option for consistent results.

Are all Psilocybe cubensis strains compatible?

The bag is designed specifically for standard Psilocybe cubensis strains. It is not intended for other mushroom species that may require different substrate compositions.

Should I choose the 2000 ml or 4000 ml version?

The 2000 ml version is the standard option, with a stated fresh-weight yield of 400–800 g. The 4000 ml XXL version offers a stated yield of 600–1,200 g and costs approximately 1.5 times as much. The choice depends on your preferred kit size and budget.

How long does it take from preparation to the first harvest?

The stated timeframe is approximately 3–5 weeks for colonisation, followed by another 1–2 weeks before the first flush. Actual timings can vary depending on the strain and environmental conditions.