Super Pasturised Straw Substrate in Unicorn Bag

This substrate is Ideal for growing your own Oyster Mushrooms, without a Laminar flow hood. It can be more successfully inoculated in open air without contamination than the master's mix due to the lower nutrient content.

Pair this with our oyster mushroom grain spawn to have everything you need to be producing your own oyster mushrooms within weeks.

2.5kg substrate block.

Contact me for discounted larger orders.