Grow Guarantee Grow lovely mushrooms, or get your money back. Order before 4pm Packed and sent same day from the UK. Supporting UK Schools Your purchase grows young minds, not just mushrooms. 50% Larger than the average grow kit. Grow lots of lovely oyster mushrooms, all whilst supporting UK schools. Now with free recipe cards! Physical and video recipes curated specifically for your kit are included with every purchase. What's included Pink, Blue & Gold oyster mushroom spawn Muzza Mushrooms grow mix Grow bags Spray bottle for misting Recipe card Full instructions (It's easy!) A good night's sleep, knowing that your purchase has helped support a UK primary school How it works Step 1 Mix and prepare the substrate Step 2 Mist with water twice a day and keep the kit somewhere bright, out of direct sunlight. Step 3 Watch the mushrooms grow and harvest when the caps begin to open. Ready to cook and enjoy. FAQs How long does it take to grow? Most kits begin growing within a few days. You'll usually harvest mushrooms within 7–14 days, depending on temperature, humidity, and care. Where should I keep the kit? A bright spot with indirect light is ideal. Avoid direct sunlight, radiators, or cold windowsills. Normal room temperature works best. How do I start growing? Open the grow window and make a small cross in the bag where shown. This lets in fresh air and starts the growing process. How often should I mist the kit? Mist lightly twice a day to keep the surface moist. If the room is particularly dry, you may need to mist a little more often. Are the mushrooms safe to eat? Yes. The kit grows edible oyster mushrooms. Harvest at the right stage and always cook before eating. How many harvests can I expect? Each grow window will produce 1–3 flushes in total. Can I store the kit before starting? It's best to start growing soon after delivery. If needed, the kit can be stored in the fridge for several months before use, though quality may reduce over time. How does the kit actually work? Inside the box is live mycelium growing on a straw-based substrate. With moisture, light, and fresh air, it produces mushrooms. Can I grow mushrooms outdoors? The kit is designed for indoor growing where conditions are stable. Outdoor growing can work, but results are less predictable. Why are mushrooms growing inside the bag? This can happen if the mycelium is very active — and is actually a good sign! Simply break them off if accessible and continue with the instructions as normal. What is the amber liquid? The amber droplets are natural metabolites produced by mycelium breaking down nutrients. They're completely harmless and perfectly normal. Why did growth slow down or stop? This is usually caused by low humidity. Ensure you're misting regularly to encourage another flush. When is the best time to harvest? Harvest just before the cap edges begin to flatten out. At this stage the mushrooms have the best texture and flavour.
