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Folk Fungi

Blue Oyster Grain Spawn

Regular price $35.00 CAD
Regular price Sale price $35.00 CAD
Sale Sold out

Blue oyster (Pleurotus ostreatus var. columinusis a productive strain that colonizes fast, making it great for beginners. Expect several harvests. Blue oysters taste great, too. Enjoy its meaty texture and rich, umami flavour.

What is grain spawn?

Grain spawn is sterilized grain that has mushroom mycelium growing on it. You can mix grain spawn with a substrate to grow mushrooms in a bag or container. This is how mushroom kits at Folk Fungi are created.


  • 1.5 kg of whole oats fully colonized with Pleurotus ostreatus var. columinus mycelium.


Growing mushrooms with grain spawn is a bit more involved than growing with a kit. If you want to learn how to use grain spawn, we suggest our Growing Mushrooms for Beginners course.


Whole oats, Pleurotus ostreatus var. columinus mycelium.


We ship anywhere in Canada using Canada Post. We also offer local pickup in Vancouver.

A person holds a bunch of oyster mushrooms.

Course: Growing Mushrooms for Beginners

Learn how to grow tons of oyster mushrooms at home using grain spawn and simple, inexpensive equipment.

View course