Sterile CVG Mushroom Substrate (Coco Coir, Vermiculite & Gypsum) - Premium Quality | Ready to Use UK
Sterile CVG Mushroom Substrate (Coco Coir, Vermiculite & Gypsum) - Premium Quality | Ready to Use UK
- Premium Quality CVG | Professional pasteurisation with perfect field capacity achieved
- Ready to Use | Heat-sealed sterile packaging - just open and mix with grain spawn
- Multiple Sizes Available | 1KG to 100KG options for any cultivation scale
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Premium CVG Substrate. Professional Results.
Our sterile CVG (Coco Coir, Vermiculite & Gypsum) substrate is professionally pasteurised and ready to use straight from the bag. Perfect field capacity achieved through precision moisture control - simply mix with your colonized grain spawn for consistent, high-yield mushroom cultivation.
What's Included
- Premium grade coco coir base
- Food grade gypsum for pH stability
- Vermiculite for moisture retention
- Heat-sealed sterile packaging
- Multiple size options (1KG-100KG)
How Much Do I Need?
We recommend a 4:1 substrate to spawn ratio for optimal colonization and yields:
| Grain Spawn | CVG Substrate Needed |
| 250g | ~1 litre |
| 500g | ~2 litres |
| 1kg | ~4 litres |
Professional Quality Standards
- Pasteurisation process: Heat-treated to eliminate contaminants
- Perfect field capacity: Optimal moisture levels maintained
- pH balanced: Gypsum ensures stable growing conditions
- Made to order: Fresh batches for maximum potency
- Heat-sealed packaging: Maintains sterility until use
Simple Usage Process
1. Open - Cut open the heat-sealed sterile bag
2. Mix - Combine with your colonized grain spawn at 4:1 ratio
3. Transfer - Place mixed substrate in your fruiting container
4. Fruit - Maintain proper humidity and wait for flushes
Premium Ingredients
- Coco Coir - High-quality coconut fiber base material
- Food Grade Gypsum - pH stabilizer and calcium source
- Vermiculite - Superior moisture retention for multiple flushes
Multiple Sizes Available
Choose from 1KG to 100KG options to suit your cultivation scale. All sizes maintain the same premium quality standards and professional pasteurization process.
Quality Guarantee
Each batch is made to order and undergoes rigorous quality testing. Our CVG substrate consistently delivers reliable results for both beginners and commercial cultivators.
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Easy Payment Options
Easy Payment Options
We accept all major credit and debit cards and cryptocurrency payments.
For cash or crypto on delivery, please email us first to arrange details before placing your order: support@williamscosupplies.com
All transactions are processed securely.
Fast & Discreet Delivery
Fast & Discreet Delivery
FREE delivery on orders over £30.
Your order will be sent with Royal Mail or Parcelforce, you will receive
an email once your order has been dispatched.
Orders are dispatched within 3
working days unless stated otherwise.
Plain packaging.
30 Day Grow Guarantee
30 Day Grow Guarantee
We offer a 30 Day Money Back / Replacement Guarantee on all of our products.
To claim your replacement or refund please send us photos of the issue to: support [at] williamscosupplies.com and we will do our best to help you.
Growing Guidelines
Growing Guidelines
Legal Disclaimer
All products sold by Williams Co Supplies are intended for lawful uses only. Our mushroom cultivation supplies are designed for growing gourmet and medicinal mushroom species.
We explicitly prohibit the use of our products for cultivating psilocybin-containing mushrooms or any other controlled substances. Cultivation of psilocybin mushrooms (magic mushrooms) is illegal in the United Kingdom and most other jurisdictions, with severe legal penalties for violation.
By purchasing our products, you acknowledge this disclaimer and confirm that you will use these items solely for legal mushroom cultivation purposes. Williams Co Supplies accepts no responsibility for misuse of our products contrary to applicable laws and regulations.
If you have questions regarding which mushroom species may be legally cultivated, please consult appropriate legal resources or authorities before proceeding.
