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Premium Mushroom Substrate For Sale At Affordable Prices
At Mushroom Spawn Store, we supply a wide range of products designed to give you the best results possible. Our substrate collection features all the essentials that are needed to start your mycology journey, including:
✔ Earthworm Casting Mushroom Substrate
✔ CVG Blend Sterile Mushroom Substrate
Customer satisfaction is our top priority; we take pride in having thousands of satisfied customers across the USA. With nearly 20 years of experience in mushroom cultivation, our knowledgeable and friendly team is on hand to guide you through every stage of the mushroom growing process, from setting up to harvesting.
You can feel confident in your mushroom cultivation journey with our products and expert support.


We’ve created the perfect mushroom-growing product and accessories that are guaranteed to give you superior results every single time. Made from the highest-quality organic and food-grade materials, our collection of mushroom substrates are designed to make your life as easy as possible.
Our products are designed for both beginners and experienced mycologists.
Standout features include:
- Monotub fruiting chambers and all the necessary accessories
- Four mini all-in-one mushroom grow bags
- One bag of grain spawn
- Mushroom substrate
- Casing mix
FAQs
Yes! Spent substrate can be reused. After you have harvested your mushrooms, the substrate can still constrain nutrient content and beneficial microorganisms that are beneficial for plants and even another flush of mushrooms.
The recommended spawn to mushroom substrate ratio for mushroom growth is around 1:2 to 1:4.
Wood-loving mushrooms, such as oyster mushrooms, grow on decomposing fibres, such as wood and coffee grounds.
If you use the incorrect sterilized substrate, you could end up with reduced or delayed growth, as well as contamination. This is why research is essential, or you may have to start again.
Yes, all our products at Mushroom Spawn Store are shipped in plain brown boxes, so you can safely and discreetly begin your mushroom cultivation journey.
Yes, we do! You can check our shipping page for further information.
After about 3 weeks, you will have enough to harvest your mushrooms. You will be able to continue harvesting this batch of mushrooms for up to 60 days, dependent on the mushroom species.
Our collection of mushroom substrates are suited for first-time growers, as well as mycology enthusiasts. They are a great way to get started in the fascinating world of mushrooms and reap the physical and mental health benefits in no time.
Yes! For orders over $50, you can choose to pay in 4 installments using ShopPay.