Want mushrooms with substance? King Oyster is your champ. Our King Oyster Grain Spawn Bag comes pre-colonised using a high yielding G1 master culture strain, meaning you can skip spore work and get straight into the joy of fruiting. The strain has been chosen for its thick stems, meaty texture, and impressive yield, so once conditions are good, you will see some satisfying results.
The spawn is lab tested and has been prepared fresh to order so that it arrives in prime condition. It works brilliantly with a variety of substrates — hardwood-based, sawdust, or our standard mix — and you can use it in monotubs, bags, or whatever fruiting setup you prefer. Because King Oyster responds well to airflow and high humidity, a monotub setup with good misting or humidity control will reward you nicely.
Expect colonisation in approximately three weeks under good conditions. Once it’s fully colonised, opening or cutting slits to allow fresh air induces fruiting, and those thick, meaty “scallops” you get are brilliant. From frying to roasting or slice and grill methods, King Oyster shines.
This spawn bag is ideal if you’re after a mushroom with personality: one that delivers on texture and flavour, not just speed. If you like growing something a bit more substantial than a delicate oyster, this is for you. Plus, because it’s spawn ready, you reduce labour, reduce risk, and increase reliability. Get ready to harvest delicious King Oysters that would make any kitchen proud.
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