Description
Sterilised Vermiculite (1000 ml) for Mycology — UK Best Value | SporeBuddies
Upgrade your grow with sterilised vermiculite that’s ready to use straight from the bag. Perfect as vermiculite for mushroom growing, this mycology vermiculite supports hydration and airflow in bulk substrates, shines as a vermiculite casing layer, and pairs beautifully with coir and gypsum for a reliable CVG mix. Each 1000 ml bag is clean, consistent, and packaged for contamination control—ideal for beginners and experienced cultivators alike.
Why Choose SporeBuddies Vermiculite (1000 ml)
Pre-sterilised & ready to use — minimise contamination risk and prep time.
Mycology-grade consistency — optimised particle size for airflow and water retention.
Versatile — use in PF Tek, CVG, casing layers, and as a lightweight moisture buffer.
Best value in the UK — quality you can trust at a fair price.
Fast UK shipping — get growing sooner, with tracked delivery options.
What Vermiculite Does for Your Grow
Moisture retention: Holds water evenly to keep substrates at field capacity longer.
Aeration & structure: Opens dense mixes so mycelium can colonise quickly and cleanly.
Stable casing: Helps maintain surface microclimates for strong pinsets and even flushes.
Humidity support: Reduces constant misting by moderating evaporation.
How to Use sterilised vermiculite?
1) Classic CVG Bulk Mix (Coir • Vermiculite • Gypsum)
Base ratio (by volume): 1 part hydrated coco coir : 1 part sterilised vermiculite : 0.05–0.1 part gypsum.
Hydrate coir, fold in vermiculite and gypsum, adjust to field capacity, then load into bags or a monotub and sterilise/pasteurise per your workflow.
2) Simple Casing Layer
Apply a 0.5–1 cm layer of sterilised vermiculite over a fully colonised substrate.
Mist lightly to maintain a glistening surface and encourage a uniform pinset.
Tip: For BRF cakes, roll freshly birthed cakes in sterilised vermiculite to improve hydration and resilience during fruiting.
Sterilised vermiculite – Product Specs
Volume: 1000 ml (approx. 1 L)
Grade: Mycology/cultivation use
State: Pre-sterilised, packaged in contamination-resistant bags
Use cases: CVG bulk substrate, PF Tek support, casing layers, humidity buffer
Who It’s For
Home growers wanting a clean, ready-to-use substrate additive.
Hobbyist mycologists refining pinsets and flush consistency.
Small commercial setups needing repeatable prep with less labour.
Why Buy from SporeBuddies
Quality first — reliable sourcing, careful sterilisation, secure packaging.
Great pricing — stock up without sacrificing performance.
UK fulfilment — fast dispatch and tracked delivery nationwide; international options available.
Sterilised vermiculite FAQs
Do I need to sterilise it again?
It’s supplied pre-sterilised. If your SOP calls for processing mixed substrates together, you can re-sterilise after blending.
Can I mix it with coir and gypsum?
Yes — that’s the standard CVG approach for balanced hydration, airflow, and minerals.
Is vermiculite a nutrient source?
Vermiculite is non-nutritive; it improves structure and moisture management so the nutrient substrate performs better.
Add Sterilised Vermiculite (1000 ml) to your kit today and build cleaner, more consistent substrates for reliable results—only at SporeBuddies.
Need a bigger option? Try 100L bag of vermiculite?
