Compressed Coconut Fiber Block

Coco coir is a versatile substrate used by mushroom growers as a base for CVG substrate (Coco – Vermiculite – Gypsum), especially for the cultivation of exotic and gourmet mushrooms such as:

• Psilocybe cubensis (for mycological research purposes only)

• Pleurotus ostreatus (oyster mushroom)

• Cyclocybe aegerita (piopino)

• Hericium erinaceus (lion’s mane)

It is also used:

• in horticulture as an alternative to peat for seedlings, cuttings, or soilless cultures

• in replanting of exotic plants or in aquaponics (with or without amendments)

• as natural bedding for reptiles or insects, thanks to its ability to retain moisture

Our coconut coir block (or coco peat) is made from coconut shells sourced from sustainable agriculture. A 100% renewable and biodegradable resource, it is guaranteed to be free of chemical additives. Its fibrous and homogeneous texture creates an ideal environment for mycelium development.

Coconut fibers naturally contain traces of magnesium and calcium, which support the optimal growth of mushrooms.

✔️ Superior quality – ISO 9001:2015 certified: We select coconut fiber blocks from certified manufacturers ISO 9001:2015, pledge of a rigorous quality control, of a consistency in products and one commitment to continuous improvement. You thus benefit from a reliable substrate, meeting international quality standards.

💡 Advantages of coco coir: Naturally resistant to mold, coco coir is an airy, lightweight substrate that is easy to store and prepare. It retains moisture optimally, promoting rapid colonization.

📦 Content: a compressed block of ±650g producing 8 to 9 liters of substrate once rehydrated with 3.5 liters of water.

Example of mushroom cultivation on CVG substrates.

🛠️ Use

For a balanced CVG substrate, follow this recipe:

• 1 block of coconut coir (650g)
• 8 cups of dry vermiculite (300g)
• 1 cup of gypsum (100g)
• 16 cups (3 to 3.5 L) of boiling water (99°C for pasteurization)

Place the ingredients in a bucket, pour in the boiling water, seal tightly, and let it rest. You can also cover the bucket with a blanket to extend the pasteurization time. Work in a clean area. After 6 to 8 hours of cooling, stir vigorously to homogenize.

The substrate must be at "field capacity": when squeezing a handful, it should hold together in a clump and release only a few drops of water. Wash your hands thoroughly with soap before touching the substrate.

🍄 Recommended inoculation

Use a ratio of 1:4 :
→ 1 part of mycelium on grain spawn to 4 parts of substrate.
Richer ratios (1:3 or 1:2) are possible but increase costs without significant benefit for most species.

Mushroom cultivation on CVG substrates.

Use in casing

The casing is a thin protective layer applied on a substrate fully colonized by the mycelium. Unlike the substrate, it does not provide nutrients, but plays an essential role in maintaining a stable moisture and stimulating the formation of primordia (young mushroom beginnings).

Coco coir is ideal for this use: applied in a thin layer (0.5 to 1.5 cm) on a well-colonized substrate already showing primordia and/or pins, it creates a humid and airy environment that promotes more abundant and regular fruiting.
We recommend pasteurizing the coco coir before use by rehydrating it with boiling water, in order to reduce the risk of contamination. Always wear protective gloves to avoid burns during this operation.

📌 Technical notes

Although coconut fiber is naturally resistant to contaminants, it remains an organic material containing nutrients. Pasteurization is therefore recommended to limit the risks of fungal or bacterial contamination. If you add elements rich in sugars (grain spawn) or nitrogen (such as manure), we even recommend sterilizing the substrate in an autoclave or pressure cooker.

And what about perlite? It is not useful for mushroom cultivation with coco coir-based substrates. However, perlite can be used in the fruiting chamber to maintain a high humidity level (in monotub, for example). It is sterile, neutral, and excellent for absorbing water.

🚫 This product is not intended for human consumption

This substrate is intended solely for mushroom cultivation. It is commonly used by mushroom growers for cultivating exotic or gourmet mushrooms. The use of Psilocybe cubensis is mentioned for informational purposes only for experienced cultivators or researchers.