Coco Coir Fruiting Substrate & Casing Mix (CVG)

Pasteurized, hydrated, and ready to use.

Our coco coir, vermiculite, and gypsum blend (CVG) is hydrated to field capacity and pasteurized, so you can open the bag and get straight to work. Use it as a moisture-holding casing layer or as a bulk fruiting substrate mixed with colonized grain spawn.

Composition

• Coco coir (primary bulk)
• Coarse horticultural vermiculite (moisture retention and structure)
• Gypsum (calcium and sulfur)
• Hydrated to field capacity

What you receive

• Pasteurized substrate at field capacity
• Filter patch bag for storage
• Mixing and fruiting guidance

Common uses

• Casing layer for compost-grown Agaricus: Button, cremini, and portobello (Agaricus bisporus) and Almond Agaricus (Agaricus subrufescens) fruit from compost and benefit from a moisture-holding casing on top.
• Casing for Wine Cap beds: A thin layer over colonized Wine Cap (Stropharia rugosoannulata) substrate helps hold surface moisture and encourage pinning.
• Bulk fruiting substrate: Mix with colonized grain spawn for monotub-style fruiting.

How to use

1. As a casing: Spread a 1/2 to 3/4 inch layer evenly over fully colonized compost or substrate, then keep the surface moist.
2. As a bulk substrate: Break up colonized grain spawn and mix it with the substrate at 1:2 to 1:4 (spawn to substrate), pack into your fruiting container, and maintain surface moisture and fresh air.

Pasteurized, not sterilized: Heat pasteurization reduces competing organisms while preserving a beneficial microbial community. It is intended for applications that use pasteurized media.

Our guarantee: Substrate arrives properly hydrated and pasteurized. If there's an issue, we'll replace it.

Storage: Use within 14 days of receipt for best results. Refrigerate to extend shelf life.