Blue-Grey Oyster Mushroom Grain Spawn
Blue-Grey Oyster Mushroom Grain Spawn
Blue-Grey Oyster Mushroom Grain Spawn
Blue-Grey Oyster Mushroom Grain Spawn

Blue-Grey Oyster Mushroom Grain Spawn

Lead time: None (Business Days)
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Grain Spawn
Plug Spawn

Select Substrate (+£5.99)

Chopped Wheat Straw

Select Growing Bag (+£8.99)

Oyster Mushroom Growing Bags

The Blue-Grey Oyster Mushroom, scientifically known as Pleurotus ostreatus, is a fascinating variety that captures the essence of both taste and visual appeal. Native to temperate and sub-tropical forests, this mushroom has become a favourite among cultivators and food enthusiasts alike.

The Blue-Grey Oyster Mushroom presents heavy clusters of fruit bodies that display a captivating grey-blue shade in temperatures below 15°C, transitioning to grey-brown otherwise. Large, short-stemmed, and with a diameter ranging from 7 to 10 cm, these mushrooms add elegance to any culinary creation.

  • High-quality fresh living grain spawn, ideal for at-home inoculation.
  • Selected for vibrant colours and robust flavours.
  • First harvest achievable in just 3 weeks, with up to 5 substantial harvests.
  • Equally suitable for newcomers and seasoned growers.
  • Compatible with a range of substrates, offering versatile growing methods.
  • Originating from a low generation strain, ensuring unmatched quality.
Pleurotus ostreatus
Inoculation Rate
Mix with ± 2-10% spawn
Recommended Substrate
Hardwood / (wheat) straw
Room temperature of 20-22 °C, substrate temperature of 25-30 °C, duration of 19-22 days.
Primordia Induction
Lower to 6-15 °C (night time); relative humidity 90-95%.
Fruiting Conditions
Room temperature of 10-17 °C, relative humidity of 85%, light of 800-1500 lux.
2 per month; interval: 1-2 weeks; between flushes: relative humidity increase to 90%.
Total Production Cycle
Approximately 3 months.
Average Yield
200 to 250g saleable mushrooms per kg fresh substrate.

The Blue-Grey Oyster Mushroom offers a distinctive aniseed aroma and a meaty texture, standing out as a versatile culinary ingredient. Its unique flavour adds richness and complexity to various dishes, from stir-fries to soups.


Note: Please refer to the specific lead times shown on product pages for more accurate delivery times.

  1. Small Orders (E.g. 100ml Spawn, Plugs): Sent via Royal Mail large letters.
  2. Medium-Sized Orders (under 2kg): Royal Mail 24-48 hour tracked parcel.
  3. Large Orders (2kg+): via DPD Express.


  1. Standard Returns: Returns and exchanges within 14 days of receipt. The item must be unused and in its original packaging. See our returns policy here.

This does not apply to our Gift E-Cards, which are delivered via email.

Customer Reviews

Based on 3 reviews

Brilliant item


Perfect for making your own spawn with!


Really quick delivery good product

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