MycMonster™ XL Grow Kit
£29.50
Monstrous yields
Brand new oversized kit, Nov 2025 upgrade. Spore to fruiting stage in 10 days thanks to our newly developed Substrate B. Same workflow as MonoBox, with a much larger colonised substrate for massive flushes.
Who's This Kit For?
Perfect for anyone who wants grow mushrooms easily and rapidly. Whether you’re a beginner or an experienced grower, if speed and simplicity are your priorities, the MycMonster™ delivers. With full colonisation from gourmet spores in as little as 10 days due to Substrate B, it’s probably the fastest grow kit money can buy right now.
Our Advanced Sterile Substrate B
It might resemble our Cylocybe Special substrate from the MycoBox, but this is next-level. We crafted Substrate B specifically for the MycMonster™ – it’s our fastest, most advanced mushroom substrate yet, designed for rapid growth and big yields.
Inoculation
If you know how to peel a sticker, you know how to inject the MycMonster. It's really that simple.
Easy Fruiting
You'll be injecting and fruiting your mushrooms from the same MycMonster™ bag. An effortless, all-in-one mushroom kit.
- 2L MycMonster™ prefilled with Sterile Substrate B
- Fruiting: In same bag
- Sanitation: 2× isopropyl alcohol wipes, 1× hand wipe, 1x 18G sterile needle
Important Warnings
The specialised HEPA filters on the MycMonster™ bag manage clean air exchange – please don’t remove them.
NEVER cut open the MycMonster™ before it’s fully colonised by mycelium, or contamination may ruin the kit.
Not Included
- Gourmet spore or liquid culture syringe – you’ll need exactly 12ml (no more, no less) unless you are using a densely you have a very densely spore-filled smaller gourmet syringe.
Storage Tips
We recommend inoculating your MycMonster™ within 4 weeks of receiving it for the best results.
Helpful Advice
- Keep incubation temperatures between 20°C and 26°C
- Incubation temperatures between of 26°C provde fastest colonisation results, but do not exceed this!
- Never place this kit on direct heat, like a heatmat.
Shipping & Legal Notes
We ship from the UK to almost anywhere in the world. Each kit is made fresh to order and typically dispatched within our 3 working day aim (see our shipping and dispatch page for more info).
This product is for cultivating legal mushroom species only
