2.5KG Substr8™ High Performance Mushroom Substrate - Mix with Grain Spawn | Premium 8-Ingredient Formula UK
2.5KG Substr8™ High Performance Mushroom Substrate - Mix with Grain Spawn | Premium 8-Ingredient Formula UK
- Premium 8-Ingredient Formula | 40% higher yields than standard coco coir substrates
- Professional Grade Results | Built-in contamination resistance with optimized pH levels
- Ready to Mix | Perfect field capacity - just combine with grain spawn
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Premium Substrate for Maximum Yields. Professional Results.
Our advanced Substr8™ substrate combines 8 specialized ingredients to deliver 40% higher yields than standard coco coir mixes. Mix with your colonized grain spawn for professional-grade mushroom cultivation with built-in contamination resistance.
What's Included
- 2.5KG premium 8-ingredient substrate blend
- Ready to mix - perfect field capacity
- Complete mixing instructions
- 6 litres total volume when prepared
How to Use
1. Prepare - Mix 1.5KG of your colonized grain spawn with this 2.5KG substrate
2. Combine - Blend thoroughly in sterile environment
3. Fruit - Place in fruiting chamber and maintain humidity
Advanced 8-Ingredient Formula
Each component is precisely measured and tested to deliver the fastest colonization and highest yields possible:
- Coco Coir - The building block of any premium substrate
- Straw - Source of carbohydrates for vigorous mycelial growth
- Bat Guano - Broad source of nutrients for enhanced mushroom development
- Worm Castings - Minerals including phosphorus, magnesium, potassium, and calcium
- Coffee - Potent nitrogen source for healthy growth
- Vermiculite - Optimal moisture retention for multiple flushes
- Gypsum - pH balance and contamination prevention
- Water - Filtered through advanced 5-stage system
Expected Results
- Yield increase: 40% higher than standard substrates
- Coverage: Perfect for 1.5KG grain spawn
- Multiple flushes: 3-4 harvest cycles typical
- Built-in resistance: Contamination-resistant formula
Customer Success Story
"This stuff is unlike anything I have ever seen. The mycelium goes nuts and it seems have built in contam resistance. I cannot rate this highly enough. Seemed expensive but wow you get what pay for!"
- Stuart P, UK
Professional Specifications
- Weight: 2.5kg
- Volume: 6 litres when prepared
- Mixing ratio: 1.5KG grain spawn to 2.5KG substrate
- Field capacity: Pre-optimized moisture levels
- Storage: 3 weeks refrigerated, 6 months frozen
- pH level: Optimized and stabilized
100 Day Money Back Guarantee
We offer a 100-day money back guarantee on this item. If you're not completely satisfied with your results, contact us at support@williamscosupplies.com for a full refund or replacement.
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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.
