How To Use A
Grow Kit

Learn How To Use a
Mushroom Fruiting Block

Watch Our Video Guide Below

What Is A Grow Kit?

A mushroom grow kit is a block of supplemented sawdust that has been sterilised and inoculated with a live mycelium culture in laboratory conditions.

It’s really simple to use and perfect for the beginner looking to learn about mushroom growing and how to maintain excellent fruiting conditions.

pink oyster mushroom grain spawn
A fully colonised oyster mushroom grow kit ready to be opened for fruiting.

When Is The Grow Kit Ready?

When grow kits are first inoculated they appear to be like loose, damp sawdust. The mycelium will grow and cover the block during the following 7 – 21 days. This layer of mycelium will provide the substrate with protection similar to the layer of mould on an aged cheese.

The  mycelium requires fresh air exchange for healthy, even growth. It is important to unbox your grow kit upon arrival and allow it to sit upright, undisturbed and out of direct sunlight.  The micron filter patch will allow for sufficient fresh air exchange.

Sometimes the block of substrate may fragment as a result of the vibrations during transit. Over the following days the mycelium will regenerate. The grow kit can only be opened once the mycelium has covered the entire block.

It’s important to note that lion’s mane mycelium can be fine and much less visible than oyster mushroom mycelium. 

A Note About Pinning

Some species like pink, white, tan and phoenix oyster mushrooms will form primordia with ease once fully colonised. Simply open the bag and place into fruiting conditions.

Other species like lion’s mane and yellow oyster may benefit from forming primordia within the sealed grow bag before being opened and placed into fruiting conditions. It’s important to keep each species within the specified temperature range to encourage the formation of primordia. Lion’s mane may be cold shocked in the refrigerator to help trigger pinning.

SGFC Shotgun Fruiting Chamber

How Can I Store A Mushroom Grow Kit?

Mushrooms require humidity to grow. We recommend using a mini-greenhouse. Misting the inside walls of the greenhouse with water will help raise humidity. The frequency of misting will depend on your local climate. A cheap humidifier in conjunction with a humidity controller can used to automate the process.

It’s important to ensure that the grow kit has fresh air exchange. Mushrooms produce carbon dioxide and will grow long and leggy if they require more oxygen. Paying close attention to how the mushrooms are growing will help identify if you require more fresh air exchange.

There is no requirement for mushrooms to be grown in darkness. It’s only important for them to be kept out of direct sunlight.

Check the product pages for species specific requirements.

Alternatively you can build a Shotgun Fruiting Chamber (SGFC) from a few common items found easily in your local hardware store.

How Do I Open A Mushroom Kit?

When opening a mushroom grow kit we want to expose the substrate to fresh air to encourage the formation of primordia or pins. The primordia will develop into mushrooms also known as fruiting bodies.

We want to direct the formation of mushrooms outside the bag where they can grow freely. To do this we minimise air within the bag. I prefer to make small incision as opposed to a large opening. A small cut will encourage fewer but larger mushrooms while retaining more moisture. Whereas a large opening may encourage the inverse.

Watch Our Video Tutorial

What To Grow This Season

This summer is finally nearing its end and we’re soon to be welcomed by a cooler change. Currently my greenhouse is full of pink, white and yellow oyster mushrooms.

These 3 species cope well during the warmer months of the year with the pink oyster being our number one favourite for its remarkable tolerance to fluctuations of both temperature and humidity making it the ideal candidate for beginners.

White oyster produces large, plentiful yields with thick, meaty white caps. The soft tender flesh of the white oyster mushroom is rich in flavour and easy to grow. 

The yellow oyster mushroom produces sweet, nutty bouquets of cheery coloured fungal delights. Although the yellow oyster yields less than its counterparts, these delicate flushes are delicious and not to be missed. Ideal for the more experienced cultivator as these require higher levels of both fresh air and humidity.

When Can I Harvest The Mushrooms?

Ideally the mushrooms are to be harvested before their caps turn upwards. It’s at this stage they are still firm and can be stored in a paper bag then refrigerated to maximise shelf life.

We recommend dehydrating excess mushrooms until they are cracker dry. They can be reconstituted and used in soups, broths and casseroles.

when to harvest oyster mushrooms
Lion's Mane Mushroom Pakora Vegan Recipe

Do You Want To Grow Your Own Mushrooms?

Are you looking for something new? Or maybe a unique and unforgettable gift for a loved one? Check out our range of mushroom grow kits. I’m sure you’ll find something special whether you’re looking for a new gastronomic delight or to craft your own therapeutic tinctures.

Are You Ready To Take The Next Step?

Do you want to learn how to grow your own oyster mushrooms at home for a fraction of the cost? Did you know that you can grow oyster mushrooms on used coffee grounds or sugar cane mulch? Have a look at our easy to follow guide and video tutorials to growing oyster mushrooms at home.

Grow Oyster Mushrooms

Who We Are

I’m Luke and I’m mad about mushrooms. I operate a small scale family run business located 40 minutes west of Brisbane. We’re passionate about fungi and we look forwarding to sharing our experiences with you.

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Frequently Asked Questions

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