Brown Oyster
Ready To Grow Kit

Pleurotus Ostreatus var.

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Brown Oyster Mushroom Grow Kits

Learn to grow your own mushrooms with one of our ready to fruit mushroom grow kits. 

Our kits consist of supplement hardwood which has been inoculated under laboratory conditions with a live mycelium culture.

Learn more about using a mushroom grow kit with our Step By Step Guide.

Next Batch Due For Dispatch 16th November

Available on backorder


Free Delivery With Every Order

Free standard delivery is included with every order. All deliveries are lodged via Australia Post.

Products listed available and in stock will be dispatched within 48 hours.

Flat rate express delivery is available with next day dispatch for any order placed before midnight 12 am.

Express post is recommended for placing interstate orders during the summer months to avoid delay and ensure freshness.

Back order – Any items on back order will be dispatched separately. Items on back order are anticipated to be fulfilled within 21 days unless stated otherwise.

What Are Brown
Oyster Mushrooms?

The brown oyster mushroom (pleurotus ostreatus var.) will produce large clusters of velvety, beige coloured caps. The thick, fast growing mycelium will produce fruits throughout most of the year with adequate protection from temperatures over 30 making it an ideal summer candidate for an indoor grow project. It will continue to fruit at temperatures as low as 12 degrees.

What Do Brown Oyster Mushrooms Taste Like?

The brown oyster mushroom has a velvety texture with a subtle, sweet earthy flavour that enhances its savoury counterparts. It that can be used in a wide range of recipes. Finely diced it can make a great addition to casseroles, or sliced and added to a stir-fry. Oyster mushrooms are suitable for crumbing to yield a softer texture resembling calamari.

Buy 10 Grow Bags For $10

Save on filter patch grow bags when you spend over $45 on grain spawn or grow kits. 

Opening A Brown Oyster Grow Kit

In order to grow, the brown oyster mushroom grow kit will need to be opened exposing the fully colonised substrate to fresh air and humidity.

Clusters of coral-like primordia will form on the surface of the substrate. These clusters will develop into mushrooms. At times these clusters may form under the plastic and can either be released to fruit or left to abort.

Primordia formation can be influenced by making a small opening for fruiting and folding the bag tight against the substrate. This will encourage the mycelium to produce primordia close to the cut where it senses both fresh air and humidity.

Grow kit with a 5 x 5 cm cross cut on the side.
Primordia forming where a x-shaped cut is exposing the substrate.

Brown Oyster Mycelium Appearance

Brown oyster mushroom mycelium is incredibly vigorous. Initially it is finer in appearance and structure than white oyster.  

The maturing mycelium may produce small amounts of yellow liquid metabolites which are a normal byproduct.

Any primordia which has formed prematurely, or in-vitro can be removed prior to using the spawn as usual. 

Pink oyster grain spawn left to form primordia
Pink oyster grain spawn

Using A Humidifier

Humidity can be managed through a diligent misting and fanning regime, however the introduction of a humidifier and humidity controller can help automate the process and ensure consistency.

Adding a 6L humidifier and controller to a greenhouse with the addition of a USB fan is a quick and easy way to make a low cost fruiting chamber that delivers excellent results.

Making A Fruiting Chamber

Mushrooms require humidity to grow. We recommend using a mini-greenhouse. Spraying the inside walls of the greenhouse will help raise humidity. A cheap humidifier 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. 

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.

Brown Oyster Pinning Conditions

Expose the fully colonised substrate to fresh air ad humidity to trigger the formation of primordia. 

Maintain humidity over 70%rh and temperatures between 12 – 28 degrees.

Brown Oyster Fruiting Conditions

Fruit brown oyster mushrooms between 12 – 28 degrees Celsius. However they will tolerate temperatures outside this range. Maintain humidity over 70% for best results. Harvest mushrooms before caps turn upwards and release spores.

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