Mushroom Substrate
Our premium Mushroom Grain Spawn & Substrates are available in various organic, sterilised options, including bulk and combo packs. Each of our mushroom substrates and grain, unless stated, are sterilised at 15 PSI for 3 hours in our UK lab, ensuring a clean and healthy environment for your mycology projects. Our substrates and grain are expertly prepared to support optimal growth, making them ideal for both novice and experienced cultivators alike.
So whether you're looking for the versatility of Organic Rye Grain or fast inoculation with White Millet - we've got the grain to enable robust growth and accelerate your learning. Our substrates are mixed to field capacity ensuring moisture is retained to encourage mycelium's fruiting bodies, mushrooms, to emerge strong & vibrant.
Grow your mushrooms with our finely-tuned recipes of Mushroom Grain & Mushroom Substrate. These tried, tested & trusted mixes are blended spcifically to optimise mycelium growth and encourage high mushroom yields. Available for fast, discreet delivery directly to your door.
Read More
What is the best mushroom growing substrate for beginners?
If you're just starting out, our coco coir mushroom substrate mix - CVG – Coir, Vermiculite & Gypsum - is a great choice. This high-quality blend is designed to retain moisture, promote aeration, and minimise contamination risks, making it perfect for beginners.
Should I sterilise or pasteurise my Mushroom Substrate?
It really depends on the substrate that you’re using. Our pasteurised mushroom substrates, such as manure-based blends or high-calcium mixes, are designed to keep the good microbes while getting rid of harmful ones. This ensures a healthy environment for your mycelium to grow. Once you mix your grain spawn with the pasteurised substrate, the risk of contamination drops significantly as the mycelium is strong enough to outcompete any remaining moulds or bacteria.
Why is coco coir one of the best mushroom growing substrate materials?
Coco coir is a fantastic choice because it retains moisture well, resists contamination, and supports strong mycelium growth. We offer hydrated coco coir mushroom substrate to make your start as easy as possible.
Does manure improve mushroom yield?
Yes, manure-based mushroom substrates provide extra nutrients that coir alone cannot. Research suggests that nutrient-rich substrates can encourage more robust and healthier growth, leading to higher yields.
What is pasteurisation?
Pasteurisation is a gentler heat treatment that kills harmful bacteria, molds, and pathogens while keeping beneficial microbes alive. These good microorganisms help outcompete contaminants, creating a healthy environment for your mycelium.
What are the advantages of a manure based mushroom substrate?
Manure-based substrates are perfect for dung-loving species providing a rich nutrient base. They're widely used in growing gourmet and medicinal mushrooms, as they help encourage stronger, more robust mycelial growth.
How should manure based mushroom substrate be prepared?
Our pasteurised manure-based substrate is ready to use right out of the bag. Simply mix it with your chosen spawn, and incubate at the right temperature for rapid colonisation.
What is the best way to store mushroom substrate before use?
For best results, store our pasteurised mushroom substrate in a cool, dry place in an airtight container. If you’re buying bulk mushroom substrate in the UK, try to use it as soon as possible to ensure freshness and optimal performance.
What is a casing layer?
A casing layer is a non-nutrient substrate that retains moisture. It’s added once the substrate is colonised to help maintain humidity and encourage healthy fruiting.
What are the benefits of a casing layer?
A casing layer helps keep the substrate surface moist, providing the ideal conditions for mycelium to establish a strong, healthy fruiting surface. It also helps protect the substrate from airborne contaminants as it enters the fruiting stage. By maintaining humidity and reducing surface dryness, a casing layer can prevent contamination and support faster colonisation, giving your mycelium the best chance to thrive.
Do I need to use a casing layer?
It depends on the species. Some mushrooms rely on a casing layer, but most don’t. We recommend researching your mushroom species to find the most suitable setup for your gourmet and medicinal mushrooms.