Organic Yellow Oyster

Strain: Pleurotus Citrinopileatus

From £20.99 Inc. VAT

Fast UK Delivery

Product Overview

  • Per Block Price: 1 Block £20.99, 6 Blocks £14.50, 12+ Blocks  £13.50
  • M2502 Strain
  • 4.5KG Organic certified
  • Expected Yield: 30-35%
  • Rigorous substrate quality testing
  • Grow room trials for every batch
  • Ethically sourced
  • Trusted producer
  • Using high quality sac02 bags

If you require volumes of more than 24 blocks please contact a member of our team HERE.

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Product Description

Per Block Price:

  • 1 Block £20.99
  • 6 Blocks £14.50
  • 12+ Blocks  £13.50

If you require volumes of more than 24 blocks please contact a member of our team HERE.

For hobbyist’s and professional mushroom farmers alike, our mushroom fruiting blocks come fully inoculated and ready to fruit. Each block contains 4.5kg of inoculated substrate which can produce 30-35% yield.

Cultivation Info



Binomial nomenclaturePleurotus citrinopileatus
Old nomenclatureNone
Incubationroom temperature:22-24 °C
substrate temperature:27-32 °C
duration:12- 13 days
Primordia induction(night time)* temperature:15-20 °C
relative humidity:90- 95 %
Fruiting conditionsroom temperature:(13) 17-22 (28)°C
relative humidity:85%
CO2-concentration:less than 1000 ppm
light:800- 1500 lux
interval:ca. 8 days
between flushes:relative humidity increase up to 90-95 %

*Primordia are induced by a shock. For most mushroom species, this is done with a thermal shock, which is defined by the minimum temperature during the day-night cycle.

†Mushroom weight immediately after harvesting, and wetted substrate weight prior to inoculation.

Important remark: these cultivation guidelines in our technical data sheets are a compilation of the data given to us by experienced cultivators. Individual differences in the cultivation conditions can seriously affect the results.

Why choose our blocks?


    We rigorously test our substrates to ensure they meet the highest standards of quality, providing you with a reliable and consistent product.

    This rigorous testing process ensures that the substrate is of the highest quality and will result in optimal mushroom growth, giving the customers peace of mind that they are purchasing a premium product that has been thoroughly tested and approved.


    We select one block from each from Each Substrate Batch to fruit in our onsite fruiting rooms.. 


By doing this practice we’re essentially going through the growing experience with our customers providing valuable insights into the substrate’s performance allowing us to continuously improve and refine our product, guaranteeing its quality and success.



    Our team will work with you to create a customized substrate solution that meets your specific needs and requirements. We can work with specific strains, or cultures supplied by customers.


  1. Certified Organic:

    Our mushroom substrate is made with 100% Organic ingredients, free from harmful chemicals and pesticides.

    Certified Organic offers full traceability. From the source of the ingredients to the finished product, ensuring transparency and accountability for the customer.

    It’s also Better for the planet as it’s free from harmful chemicals and contaminants.

    By using bi-product materials from other local industries, they are able to reduce waste and create a closed loop system where resources are used to their fullest potential. Additionally, utilizing these bi-products can often result in a more cost-effective substrate solution for their customers, while also promoting sustainability. By being at the forefront of circular economy practices in the mushroom cultivation industry, this substrate producer is able to differentiate themselves and provide customers with an eco-friendly and financially savvy option.

    A locally sourced product is always better, it reduces unnecessary movement goods while creating more resilient communities.

    Our company operates with a strong commitment to ethical practices and sustainability, ensuring that all aspects of our operations are environmentally responsible.

    High Yields:
    Our substrates have been carefully formulated to promote healthy growth and high yields of mushrooms, maximizing the return on your investment.


We have a reputation for producing top-quality substrates and providing exceptional customer service, earning us a loyal customer base and strong industry reputation.

Certified Organic: The key USP of a certified organic mushroom substrate producer is the organic certification, which ensures that the substrate is produced without the use of harmful chemicals or synthetic fertilizers.

High-Quality Ingredients: The producer uses only the finest and freshest organic materials to create the substrate, ensuring that it is of the highest quality and will result in optimal mushroom growth.

Sustainability: The organic production process is environmentally friendly and sustainable, reducing the carbon footprint and supporting the local community.

Additional information

Package Size

1 Block, 6 Blocks, 12 Blocks, 18 Blocks, 24 Blocks

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