King Oyster Mushroom Grain Spawn 1.5kg

King Oyster Spawn

King oyster is a different beast from other oysters. It produces fewer, much larger mushrooms with fat stems, and it prefers richer substrate. This king oyster mushroom grain spawn is a 1.5kg bag of millet and milo grain fully colonised by a reliable Pleurotus eryngii strain.

What Is Included

• 1 x 1.5kg king oyster grain spawn bag
• Access to our online growing guide

What to Grow It On

King oysters do best on supplemented hardwood sawdust, such as a Master’s Mix of hardwood and soy hulls. They are less keen on straw than other oysters. Sterilised substrate gives far better results than pasteurised, so bags are usually the way to go.

How to Use

1. Break up the spawn.
2. Mix into sterilised hardwood substrate in filter patch grow bags at around 10 to 20 percent.
3. Incubate at 20 to 25°C, then allow a couple of extra weeks to mature after full colonisation.
4. Fruit at 12 to 18°C from the top of the bag, keeping a little CO2 at first to encourage thick stems.

Our Advice

Patience is the key with king oyster. Giving the bags a couple of extra weeks after they look white made a big difference to our yields.

Storage

Fridge for up to two weeks if needed.

Related

See our king oyster fruiting block, king oyster liquid culture and bulk king oyster spawn. All spawn in mushroom grain spawn.