Wondering how to grow mushrooms at home? This beginner’s guide walks you through the whole process, from choosing your setup to harvesting your first flush. Whether you’re growing mushrooms UK-wide for the first time or looking to improve your yields, these steps apply whether you’re using an all-in-one kit or building your own setup.
What You Need to Grow Mushrooms at Home
Before you start, gather the essentials: a substrate (a pre-made mix, or your own rye grain and casing layer), a clean and sanitised workspace, 70% isopropyl alcohol, gloves, a spray bottle for misting, and a thermometer/hygrometer to track conditions. The easiest way to get everything in one go is with a mushroom growing kit — see our guide to the best mushroom growing kits UK to compare the options for beginners.
Step-by-Step: How to Grow Mushrooms
- Choose your kit or substrate. A ready-made kit removes the guesswork on ratios and sterilisation — ideal if this is your first grow.
- Inoculate. Sanitise your workspace, then introduce your culture into the substrate through the injection port.
- Incubate. Keep the bag or tub in a warm, dark spot (24–27°C) for 7–14 days until it’s fully colonised and mostly white.
- Set up fruiting conditions. Move to a well-lit area with fresh air exchange and consistent humidity — light is one of the most overlooked factors here; see our mushroom grow light if natural light isn’t reliable in your growing space.
- Harvest. Twist and pull mushrooms gently once caps mature, then re-mist to encourage a second flush.
How Do You Grow Mushrooms Without a Kit?
You can grow mushrooms from scratch using your own substrate (commonly rye grain, straw, or a coco coir/vermiculite mix), sterilised jars or bags, and a culture or spawn. It takes more equipment and a stricter sterile technique than a kit, since you’re managing sterilisation and ratios yourself rather than starting from a pre-hydrated, pre-sterilised mix. Most beginners get more consistent results — and fewer contaminated batches — starting with a kit before moving to bulk substrate.
FAQs
How long does it take to grow mushrooms? Most kits take 2–4 weeks from inoculation to first harvest, depending on temperature and species.
What’s the easiest mushroom to grow at home in the UK? Oyster mushrooms are the most forgiving for beginners — fast-colonising and tolerant of a wider temperature range than most.
Do mushrooms need light to grow? Yes — while mycelium colonises in the dark, fruiting mushrooms need indirect light to trigger and orient pinning.
Can I reuse my substrate? Most kits will give you a second, smaller flush if you re-hydrate and mist the spent substrate after the first harvest.
Related Guides
New to growing? Read our Monotub Grow Kit Guide and How to Use a Monotub Mushroom Growing Kit. Browse our full range of mushroom growing kits.