Blue/Grey Oyster Mushrooms

(incl. VAT)

The Blue/Grey Oyster Mushroom (Pleurotus ostreatus var. columbinus) is a cold-weather sub-strain of the classic Pearl Oyster mushroom native to Western Europe. The Blue Oyster produces beautiful blue coloured caps, which lighten to a grey colour as they mature.

With their mild, delicate taste and velvety texture, Blue Oyster mushrooms are perfect for stir-frying and sautéing. Slightly sweet and earthy flavour, this mushroom is often described as having a delicate seafood-like taste and pairs well with white meats and seafood dishes.

Our Blue/Grey Oyster mushrooms, primarily the stems, are very meaty and ever so slightly chewy, perfect as a meat substitute for vegans or vegetarians. We harvest our oyster mushrooms before full maturity to maximise their flavour, preserve nutrients and increase their shelf life.

Recent scientific studies have discovered numerous strains of Oyster mushrooms (including the Blue/Grey oyster) naturally produce Lovastatin, a popular drug for treating excessive blood cholesterol.

Oyster mushrooms also have incredibly high levels of the antioxidant ergothioneine, widely known to decrease inflammation within the body and lower the risk of cardiovascular disease.

Our oyster mushrooms are grown on locally sourced wheat straw, supplemented with organic rye grains, and spend coffee grounds donated to us from local cafes and coffee shops. Our Blue/Grey Oyster mushrooms take us around 30 days to grow.

We tend to grow Blue Oysters during winter months, so supply might drop come summer; get your orders in fast before we run out!

Commercial B2B Inquiry

This product is only supplied to commercial customers. If you are interested in having us supply this product to your business, please fill out the inquiry form below and one of our team will get back to you to discuss. Thank you.

Please enable JavaScript in your browser to complete this form.

What additional mailing lists would you like to subscribe to?

Newsletter Options 1
Newsletter Options 2
Newsletter Options 3
Shipping & Returns info | Free Shipping Over £90
⇓ Check more product information below ⇓

People who bought this also bought

5-Star Customer Testimonials

Over 2,300 rave reviews and counting! Here's a random selection (different on every page)...

Best spawn bags on UK market! I've ordered couple of times from Maya and was never disappointed! Quality bags, quality packaging & best customer service! 5/5 👍🏼👍🏼

⭐⭐⭐⭐⭐Kamilo Kamil on Google

These guys are great and definitely worth the coin! I don't get grow bags from anywhere else now but have found these have the perfect ratio of contents and have never been contaminated so it is clear its very sterile.

⭐⭐⭐⭐⭐Danny Darka on Google

Awesome product. Best I’ve used so far. Very fast delivery and helpful customer service. Also the kids loved the little sweets added to the box. Nice touch.

⭐⭐⭐⭐⭐Kevin Talbot on Google

Every single bag worked absolutely fine from the second it innoced, it had healthy white myc eating at it in no time! And getting the bag to fruit could not be any simpler! Amazing bags! Will always come back for sure! Thanks, Ben.

⭐⭐⭐⭐⭐e chalk on Google

Storage and Shelf-Life

Best eaten immediately after harvest, but unlike other oyster mushrooms, the Blue/Grey Oyster mushroom can be stored in the fridge for over a week. We help prolong all our mushrooms’ shelf life by harvesting them before full maturity. This invariably increases our prices ever so slightly, but it means that you’re left with young, vital, healthy mushrooms, which will keep for much longer than if we’d left harvesting to a later date to maximise yields.

Mushrooms should be stored in paper bags if available (ask us at the farmer’s markets. We’ll happily give you some to store your mushrooms when you return home).

Storing mushrooms in the bottom of the fridge in the vegetable drawer is preferable as it’s warmer than the rest of the refrigerator.

TIP: To stop your mushrooms from drying out, place a damp paper towel in the paper bag with the mushrooms.

Mushrooms should never be stored in sealed plastic bags or tubs as the plastic can rapidly deteriorate the mushroom’s flesh.

Additional Info & External Resources

Common Names

Tree Oyster, Straw Mushroom.

Hiratake (‘Flat Mushroom’ in Japanese), Tamogitake (Japanese), Orecchione Gelone/Agarico Ostreato (Italian), Oreillette/Couvrosse/Pleurote en Huître (French), Austernseitling (German), Boczniak Ostrygowaty (Polish), Pleuroto Ostreado (Spanish), Ostronskivling (Swedish).

Growth Parameters

  • Spawn run: 24°C | 85-95% RH | CO2 >10,000 ppm | 0 lux | FAE 1 | 12-21 days
  • Primordia Formation: 10-16°C | 95-100% RH | CO2 <1,000 ppm | FAE 4-8 | 1500 lux | 3-5 days
  • Fruitbody Development: 10-21°C | 85-90% RH | 4-7 days
  • Fruiting Cycle: 3-4 Crops 7-14 days apart


No fuss Shipping, Returns & Guarantee.

  • We aim to dispatch orders within 2 working days (Monday-Friday)
  • Free shipping option for orders over £90.00 - Shipping Policy
  • No questions asked returns policy - Returns Policy
  • For when you may want a refund - Refunds Policy

Join the Tribe

Please enable JavaScript in your browser to complete this form.

What additional mailing lists would you like to subscribe to?

Newsletter Options 1
Newsletter Options 2
Newsletter Options 3