If you're looking for a deep dark blue coloured oyster that can handle cold temperatures then Blue Oyster Fuji is the strain for you.

We've grown this strain between 5°C and 10°C and it doesn't effect it at all, in fact, it makes it even more beautiful! The smaller cap size is perfectly suited to punnet packaging, while the clusters still hold impressive weight. While not quite as meaty as its larger capped Blue Oyster counterparts, it shows resistance to blotch, which is known to negatively impact other Blue Oyster strains.

To trigger pin formation, this strain requires cooler temperatures below 16°C. For best results, grow it in a climate-controlled fruiting room or seasonally during the cooler months of autumn and winter, depending on your local climate.

Mushroom grain spawn is used to transfer mushroom mycelium into a bulk substrate, a process known as inoculation. Grain is the industry standard for spawn production, with wheat, rye, millet and sorghum commonly used. At Little Acre, we use Australian-grown wheat grain.

Once mixed through a suitable substrate, the mycelium colonises the material, eventually producing mushrooms. Grain spawn itself is not intended as a fruiting substrate, as it lacks the moisture retention and structural components needed for strong mushroom yields.

Common bulk substrates include pasteurised straw, sugarcane mulch, hardwood sawdust and pelletised blends such as Master's Mix, one of the most popular substrates for growing gourmet mushrooms. Depending on the substrate, preparation may involve pasteurisation or sterilisation before inoculation.

After preparing your substrate, mix in the grain spawn thoroughly and allow the mycelium to colonise. As with all mushroom cultivation, clean working practices are essential to minimise contamination and achieve the best results. Inoculations should ideally be performed in front of a laminar flow cabinet or inside a still air box to prevent contamination.