Austernseitling Kolonie

Cultivation instructions for oyster mushrooms (Pleurotus ostreatus)

Welcome to Mykoport! The oyster mushroom, also known as the veal mushroom, is one of the most popular edible mushrooms worldwide. It impresses with its versatility, mild flavor, and ease of cultivation – ideal for beginners. Below you will find all the steps, tips, and advice for successful cultivation. For best results, we recommend our fresh liquid mycelium from the Mykoport shop.

Interesting facts about the oyster mushroom

Oyster mushrooms (Pleurotus ostreatus) are fast-growing, robust mushrooms with tender, aromatic flesh. They thrive on many organic substrates and are also very suitable for beginners.

Advantages of home breeding

  • Freshness and quality : Mushrooms straight from home, crisp and freshly harvested.

  • Independence : No seasonal dependency, available at any time.

  • Sustainability : In-house production using residual materials.

What do I need?

a) Substrat

  • Straw pellets (wheat/rye) or chopped, pasteurized straw

  • Alternatively: coffee grounds, sawdust (beech/oak), paper, cardboard

b) Additions

  • Bran or gypsum (optional, for higher yields)

c) Accessories

  • Large plastic bags/pouches (with filter) or buckets with holes

  • Large container for substrate preparation

  • spray bottle

d) Oyster mushroom liquid mycelium

Mykoport's liquid mycelium ensures fast, safe, and uncomplicated colonization of the substrate. Learn more about our liquid mycelium >>

Step-by-step instructions

Step 1: Substrate preparation

  1. Processing straw :

    • Chop the straw into 5-10 cm pieces.

    • Pasteurize in hot water (65–80°C) for approximately 1–2 hours.

    • Drain well and bring to approximately 65–70% moisture content.

  2. Alternatively, use straw pellets :

    • Pour approximately 2.5 liters of boiling water over 1 kg of pellets.

    • Allow the pellets to soak for about 1 hour, then loosen them and let them cool.

  3. Mix substrate :

    • Optionally mix in 5–10% bran (promotes growth).

Step 2: Vaccination (Inoculation)

  1. Place the cooled substrate onto a large, clean work surface.

  2. Shake Mykoport liquid mycelium well.

    • For every 3–5 kg of substrate, work in approximately 20–50 ml of liquid mycelium evenly.

  3. Mix everything thoroughly – the better distributed, the faster the mycelium will grow.

Tip: Using our Mykoport liquid mycelium significantly increases your chances of success, as it is particularly vital and free of foreign germs. Secure your liquid mycelium now! >>

Step 3: Filling and sealing

  1. Fill the inoculated substrate firmly into suitable filter bags or buckets (avoid air pockets).

  2. Seal the bag, leaving the filter area open for air exchange, or drill holes (approx. 1–2 cm in diameter) in the bucket.

Step 4: Colonization phase (incubation)

  • Temperature: 18–24°C

  • Light: No light is needed (mycelium also grows in the dark)

  • Duration: 10–21 days (depending on temperature and mycelium quality)

  • Humidity: 70–80%

  • Note: The substrate should be uniformly white before fruiting is initiated.

Step 5: Initiate fertilization

  1. Light : 8–12 hours of daylight or artificial light per day (no direct sunlight!).

  2. Temperature: 12–18°C

  3. Humidity: 85–95%

  4. Fresh air: Ventilate at least twice a day (oyster mushrooms are sensitive to CO2).

  5. Open the bags in several places or cut "crosses" into them so that the mushrooms can escape.

  6. Spray regularly with water , but avoid waterlogging.

Step 6: Harvest

  • Timing: When the mushroom caps are approximately 5–15 cm in size and still slightly curved downwards.

  • Harvest: Carefully twist out or cut off the entire bunch.

  • Note: After harvesting, the substrate can provide 1–2 further flushes (after a short resting and moistening phase).

Tips, tricks & sources of error

  • Mold prevention : Clean working practices and thorough pasteurization are crucial.

  • Small mushrooms, long stems? Usually too little fresh air – ventilate more often!

  • No fruiting bodies? Check temperature, humidity and light – or use fresh liquid mycelium.

  • Dry hats? Aim for higher humidity, spray more often.

FAQ: Frequently Asked Questions

Can I use coffee grounds?
Yes, oyster mushrooms also thrive on coffee grounds. Mix them with some straw for better structure.

How do I store liquid mycelium?
Store in the refrigerator (2–6°C), do not freeze.

How much mycelium do I need?
For 5 kg of substrate, we recommend 20–50 ml of liquid mycelium.

Mykoport product recommendations

  • Liquid mycelium oyster mushroom – for a quick start and highest success rate

  • Breeding bag with microfilter

  • Substrate sets and starter kits

View oyster mushroom liquid mycelium now >>

Advice & Contact

Do you have any questions? The Mykoport team will be happy to assist you.
Click here for the contact form >>

We wish you much success and enjoyment with your own oyster mushroom cultivation!

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