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📦 Growing Kit orders will typically arrive the next day if ordered before 2pm and using DPD 📦  Free Sticker on orders above £25

Why We Are Award-WinningWhat We Grow and SellOrdering, Delivery and Gifts

Every mushroom growing kit we sell is hand-planted in small batches at our farm in Storrington, West Sussex. We have been growing mushrooms for six generations, and that experience goes into every kit we produce.

Our kits are "ready growing," which means the hard part of mushroom cultivation, the spawn run and colonisation, has already been completed for you. When the kit arrives, the mycelium is fully established and your first harvest is days or weeks away, not months.

All of our indoor kits grow between 14 and 21 degrees, with an optimum of 17 to 18 degrees, making them well suited to UK homes year-round. No greenhouse, no grow tent, no special equipment. Just a spray bottle and a suitable spot away from direct sunlight and draughts.

Full growing instructions are included with every kit, and our product support team is available if you need help at any stage.

How Our Mushroom Growing Kits Work

1

Choose Your Mushroom

From beginner-friendly Chestnut to exotic Lion's Mane, there is a mushroom growing kit for every taste. See our mushroom growing guides to compare.

2

Your Mushroom Kit Arrives Ready Growing

We complete the mushroom colonisation at our farm so you skip the hard part. The mycelium is fully established when it reaches your door.

3

Spray Your Mushrooms Twice Daily

Keep your mushroom kit indoors at 14 to 21 degrees with indirect light. A clean spray bottle is the only equipment you need.

4

Harvest Your Mushrooms

Your first mushroom crop in as little as 7 days. Each kit produces multiple harvests over several weeks.

Not Sure Which Kit?

Merryhill Mushrooms cartoon infographic showing the growing process

First time growing? Start with Chestnut or White. These are the most forgiving kits in the range with the longest growing window and the highest number of flushes. Setup takes two minutes and your first crop appears within 16 to 24 days.

Want fast results? Shiitake and Pink Oyster both produce a first harvest in 7 to 10 days. Shiitake crops heavily on the first flush, often around 1kg. Pink Oyster doubles in size overnight and is a favourite as a meat substitute.

Looking for something unusual? Lion's Mane produces a striking shaggy cluster with a seafood-like flavour often compared to lobster. It is illegal to forage in the UK, making growing your own the only way to enjoy it fresh. King Oyster produces thick, meaty stems that can be sliced into vegan scallops or shredded as pulled mushroom.

Buying as a gift? All kits can be stored in the fridge for up to 10 days before starting. Let us know at checkout and we will adjust dispatch for maximum shelf life. See our gift ordering guide for details.

Mushroom Growing Timeline

Pink Oyster mushrooms at harvest stage from a Merryhill Mushrooms growing kit timeline

Wondering what mushroom growth actually looks like day by day? Our visual mushroom growing timeline shows real photos from setup to harvest for every variety in the range, including Pink Oyster, Lion's Mane, Shiitake, King Oyster, Black Pearl, Enoki and Chestnut.

Whether you are growing mushrooms for the first time or comparing varieties before buying, the timeline gives you a clear picture of what to expect at each stage of your mushroom growing kit.

View the Full Mushroom Growing Timeline

New for Spring 2026

We are expanding the range this spring with three new varieties:

Black Pearl Oyster produces thick, meaty stems with small dark caps. A King Oyster variant that uses a log format with topsoil. Harvest in 15 to 20 days.

White Oyster is a delicate, mild-flavoured oyster that grows in clusters from a ready growing box kit. Fast growing with a first harvest in 7 to 10 days.

Enoki is a Japanese favourite with long, delicate stems and tiny caps. A staple in hot pots, soups and stir-fries. Prefers cooler temperatures of 10 to 18 degrees. Launching April 2026.

New mushroom growing kit varieties launching spring 2026

More Than Just Growing Kits

Merryhill Mushrooms adaptogenic coffee and food range

Our adaptogenic mushroom coffee is enriched with Lion's Mane, Cordyceps and Ashwagandha extracts. We also offer a Reishi-based hot chocolate designed for evenings. All products use fruit body extracts only, made in the UK.

Our A-grade dried porcini, wild mushroom mixes and porcini powder are the same products we supply to Sussex restaurants and farm shops. Our mushroom infused salts offer a low sodium alternative with real depth of umami flavour.

Ready to Start Growing?

Every kit arrives fully colonised and ready to fruit. Pick your variety and your first harvest could be days away.